mbm_grd3dplot
Section:  MB-System 5.0  (1)
Updated:  3 June 2013 
Index


 
NAME

mbm_grd3dplot - Create an executable shellscript which will generate
a GMT 3D perspective plot of gridded data in a GMT grd file.

 
VERSION

Version 5.0

 
SYNOPSIS

mbm_grd3dplot -Ifile
[-A[magnitude[/azimuth/elevation]
-D[flipcolor/flipshade]
-E[view_az/view_el] -Fexaggeration
-Gcolor_mode -H -Kintensity_file 
-Ndrape_file
-Oroot -Ppagesize 
-S[color/shade] -Uorientation -V
-W[color_style[/palette[ncolors]] | cptfile] ]

Additional Options:



[-Btickinfo
-Jprojection[/scale | width]
-Ltitle[:scale_label] -Mmisc
-Q -Rw/e/s/n -X -Y
-Zmin/max ]

Miscellaneous Options:



[-MGDgmtdef/value  -MGFscale_loc
-MGL[f][x]lon0/lat0/slat/length[m]
-MGQdpi -MGSscalefactor
-MGTx/y/size/angle/font/just/text
-MGU[/dx/dy/][label]
-MVMmesh_pen -MVN[null[/r/g/b]] ]


 
DESCRIPTION

mbm_grd3dplot is a macro to generate a shellscript of GMT commands which, when
executed, will generate a 3D perspective Postscript plot of
gridded data.  Several styles of plots can be generated,
including color fill views, color shaded relief views, mesh
plot views, and text labels. Five different color schemes are
included. The plot will be scaled to fit on the specified page
size or, if the scale is user defined, the page size will be
chosen in accordance with the plot size. The vertical exaggeration
may be specified. The primary purpose
of this macro is to allow the simple, semi-automated
production of nice looking maps with a few command line
arguments. For users seeking more control over the plot
appearance, a number of additional optional arguments are
provided. Truly ambitious users may edit the plot shellscript
to take advantage of GMT capabilities not supported by this
macro.

 
AUTHORSHIP

David W. Caress (caress@mbari.org)




  Monterey Bay Aquarium Research Institute



Dale N. Chayes (dale@ldeo.columbia.edu)




  Lamont-Doherty Earth Observatory

 
SIMPLE DESCRIPTION OF BASIC OPTIONS


-A


magnitude[/azimuth/elevation]



Sets the parameters which control the
synthetic illumination of the gridded data (shaded relief).
The value magnitude
is an effective vertical exageration which modulates the intensity of
the shading; typical values are in the 0.1 to 10 range.
The value azimuth
is the azimuth in degrees from north from which the data is illuminated.
The value elevation is the elevation of the illumination
in degrees from horizontal.
Defaults: magnitude = 0.2; azimuth = 0.0;
elevation = 30.0;
-D


[flipcolor/flipshade]



Normally, the color or grayscale tables used for color maps run from
cool colors (or dark grays) for low grid values
to hot colors (or light grays) for high grid values.
This option reverses the color table so that cool colors (dark grays)
correspond to high values and hot colors (light grays) to low values.
If -D is given alone, it applies to the color table used
for color or gray fill plots,  shaded or unshaded. If the plot
is to be shaded,  either by synthetic illumination (-G2)
or using an intensity file (-K and -G3 options), then
setting flipshade = 1 will cause the shading convention
to be reversed (e.g. high intensities overlaid as light shading).
Using -D0/1 will flip the shading convention
but leave the default color convention.
-E


[view_az/view_el]



Sets the azimuth and elevation in degrees of the
viewpoint for 3D perspective views.  An view_az of 0
represents a view from the north, and view_az = 90
represents a view from the east.  An view_el of 0
represents a horizontal view.  Default: view_az = 200.;
elevation = 40.
-F


[exaggeration]



Sets the vertical exaggeration of the perspective plot.
By default the vertical exaggeration is chosen so that the
plot fits nicely on the page. This option works only if the
data are in geographic coordinates (longitude and latitude).
-G


color_mode



Turns on color fill plot and sets the style of the plot.




        color_mode = 1: 3D color/gray fill.

        color_mode = 2: 3D color/gray fill shaded by

                        synthetic illumination.

        color_mode = 3: 3D color/gray fill shaded by

                        an intensity file. The -K

                        option must be used to specify

                        the intensity file.


        color_mode = 4: 3D Color/gray fill of slope

                        magnitude.


        color_mode = 5: 3D Color/gray fill shaded by

                        slope magnitude.

        color_mode = 6: 3D mesh plot.

        color_mode = 7: 3D mesh plot with contours.
-H


This "help" flag cause the program to print out a description
of its operation and then exit immediately.
-I


grdfile



Sets the name of the gridded data file to be plotted.
Alternatively, grdfile may be a list of grid files
(one filename on each line) to be plotted together.
-K


intensity_file



Sets the name of the gridded data file containing
instensity values to be used for shading the map.
-N


drape_file



Sets the name of the gridded data file to be draped on
the relief provided by the file specified with the -I
option. If -Ndrape_file is specified, then
all color control options will apply to the data in
\fIdrape_file.
-O


root



Sets the root used to construct the filename of the output shellscript
(root.cmd) and names of files created when the shellscript is
run.  Normally the
name of the input grid file or grid file list is
used as the root.
-P


pagesize



This option sets the size of the page the plot will be centered
on. If the user does not set the plot scale, the plot will be
sized as large as will fit on the designated page. If the user
sets the plot scale such that the plot will not fit on the
designated page, a larger page will be used.
The supported page sizes include ANSI A, B, C, D, E,
F, and E1, as well as most metric page sizes. See the
COMPLETE DESCRIPTION OF OPTIONS section
below for a complete list of
the supported page sizes. The default page size is A.
-S


[color/shade]



This option enables effective histogram equalization of the
color and/or shading of the gridded data. The equalization is
not achieved by changing the data values, but rather by
constructing the color or shading tables so that
the boundaries in the tables encompass equal fractions of
the datapoints. This serves to focus color or shading contrasts
in value ranges corresponding to the bulk of the data values.
If -S is given alone or with color = 1,
it enables equalization of the color table used
for color or gray fill plots,  shaded or unshaded. If the plot
is to be shaded,  either by synthetic illumination (-G2)
or using an intensity file (-K and -G3 options), then
setting shade = 1 will cause the shading to be equalized.
Using -S0/1 will equalize the shading without
equalizing the color table.
-U


orientation



Normally the orientation of the plot (portrait or landscape)
is selected automatically so as to maximize the plot scale.
The -U option allows the user to set the plot orientation. If
orientation = 1, a portrait plot will be produced; if
orientation = 2, a landscape plot will be produced.
-V


Causes mbm_grd3dplot to operate in "verbose" mode
so that it outputs
more information than usual.
-W


[color_style[/palette[ncolors]] | cptfile]



This option controls the color scheme used for color
fill plots.

If color_style = 1 [default], then
the color scheme used will be a continuous grading
of colors. If color_style = 2, the color scheme
will be a set of discrete color intervals. The color
palette used is set using palette. Five palettes
are available:

        palette = 1:    Haxby colors [default]


        palette = 2:    high Intensity colors


        palette = 3:    low Intensity colors


        palette = 4:    grayscale


        palette = 5:    uniform grayscale




A complete description of the color palettes is given
in the COMPLETE DESCRIPTION OF OPTIONS section below.



The ncolors parameter sets the number of color
values used in plotting, whether the colors are
represented in a continuous color scale or a
stepped, discrete color scale [default is 11].

If the option argument is the path to an existing GMT
color palette (CPT) file, then that CPT file and its
color scheme will be used for the plot


 
COMPLETE DESCRIPTION OF OPTIONS


-A


magnitude[/azimuth]



Sets the parameters which control the
synthetic illumination of the gridded data (shaded relief).
The value magnitude
is an effective vertical exageration which modulates the intensity of
the shading; typical values are in the 0.1 to 0.5 range.
The value azimuth
is the azimuth from which the data is illuminated.
Defaults: magnitude = 0.2; azimuth = 0.0;
-B


tickinfo



Sets map boundary tickmark intervals. See the psbasemap
manual page for details. By default the program chooses
basemap annotations based on the map boundaries.
-D


[flipcolor/flipshade]



Normally, the color or grayscale tables used for color maps run from
cool colors (or dark grays) for low grid values
to hot colors (or light grays) for high grid values.
This option reverses the color table so that cool colors (dark grays)
correspond to high values and hot colors (light grays) to low values.
If -D is given alone, it applies to the color table used
for color or gray fill plots,  shaded or unshaded. If the plot
is to be shaded,  either by synthetic illumination (-G2)
or using an intensity file (-K and -G3 options), then
setting flipshade = 1 will cause the shading convention
to be reversed (e.g. high intensities overlaid as light shading).
Using -D0/1 will flip the shading convention
but leave the default color convention.
-E


[view_az/view_el]



Sets the azimuth and elevation in degrees of the
viewpoint for 3D perspective views.  An view_az of 0
represents a view from the north, and view_az = 90
represents a view from the east.  An view_el of 0
represents a horizontal view.  Default: view_az = 200.;
elevation = 40.
-G


color_mode



Turns on color fill plot and sets the style of the plot.




        color_mode = 1: 3D color/gray fill.

        color_mode = 2: 3D color/gray fill shaded by

                        synthetic illumination.

        color_mode = 3: 3D color/gray fill shaded by

                        an intensity file. The -K

                        option must be used to specify

                        the intensity file.


        color_mode = 4: 3D Color/gray fill of slope

                        magnitude.


        color_mode = 5: 3D Color/gray fill shaded by

                        slope magnitude.

        color_mode = 6: 3D mesh plot.

        color_mode = 7: 3D mesh plot with contours.



See the grdimage manual page for information on shading
with intensity files
-H


This "help" flag cause the program to print out a description
of its operation and then exit immediately.
-I


grdfile



Sets the name of the gridded data file to be plotted.
The data must be in a form acceptable to GMT version 3
programs (see the GMT Cookbook & Technical Reference).
-J


projection[/scale | /width]



Selects the map projection. By default the map projection is
Mercator and the plot scale is chosen to fit on the selected
page size (see -P option). The user may specify a
different projection to be used, in which case the plot scale
is still automatically chosen to fit the page. The user may
also specify both the projection and the plot scale. If
the projection specifying character is upper case, a plot
width rather than a plot scale is used.
The scale values are specified in inch/degree or in 1:xxxxx
ratios. Plot widths are specified in inches. If the user
specifies a plot scale such that the plot will not fit
on the default A size page, a appropriately larger page
size will be chosen.




CYLINDRICAL PROJECTIONS:




-Jclon0/lat0/scale (Cassini)



-Jmscale (Mercator)



-Joalon0/lat0/azimuth/scale (Oblique Mercator - point and azimuth)



-Joblon0/lat0/lon1/lat1/scale (Oblique Mercator - two points)



-Joclon0/lat0/lonp/latp/scale (Oblique Mercator - point and pole)



-Jqlon0/scale (Equidistant Cylindrical Projection (Plate Carree))



-Jtlon0/scale (TM - Transverse Mercator)



-Juzone/scale (UTM - Universal Transverse Mercator)



-Jylon0/lats/scale (Basic Cylindrical Projection)




AZIMUTHAL PROJECTIONS:




-Jalon0/lat0/scale (Lambert).



-Jelon0/lat0/scale (Equidistant).



-Jglon0/lat0/scale (Orthographic).



-Jslon0/lat0/scale (General Stereographic)




CONIC PROJECTIONS:




-Jblon0/lat0/lat1/lat2/scale (Albers)



-Jllon0/lat0/lat1/lat2/scale (Lambert)




MISCELLANEOUS PROJECTIONS:




-Jhlon0/scale (Hammer)



-Jilon0/scale (Sinusoidal)



-Jklon0/scale (Eckert VI)



-Jnlon0/scale (Robinson)



-Jrlon0/scale (Winkel Tripel)



-Jwlon0/scale (Mollweide)




NON-GEOGRAPHICAL PROJECTIONS:




-Jpscale (Linear projection for polar (theta,r) coordinates)



-Jxx-scale[l|ppow][/y-scale[l|ppow]] (Linear, log, and power scaling)



More details can be found in the psbasemap manpages.
-K


intensity_file



Sets the name of the gridded data file containing
instensity values to be used for shading the map.
-L


title:scalelabel



Sets the title and the label for the colorscale (if used) of
the plot. Note that a colon (:) rather than a slash (/) is
used to separate the labels. Colons cannot be used in the
labels themselves. If this option is not used, then a default title
and colorscale label are provided. If the title is supplied
alone, a default colorscale label will be provided. To force
no title use -L" "; to force no title or colorscale
label use -L" : ".
-M


A series of "miscellaneous" options are provided which are
given as -M followed by a two character identifier, followed
by any other parameters associated with that option.
The -M options may be strung together separated by
colons, e.g. "-MGQ100:GU", which is equivalent to
"-MGQ -MGU".
-N


drape_file



Sets the name of the gridded data file to be draped on
the relief provided by the file specified with the -I
option. If -Ndrape_file is specified, then
all color control options will apply to the data in
\fIdrape_file.
-MGD


gmtdef/value



Allows the user to set the GMT default values used as
the plot is constructed. This command may be given repeatedly
to set as many GMT defaults as required. For example, to
set the basemap annotation font to Courier, use
"-MGDANOT_FONT/Courier".
-MGF


scale_loc



Sets the location of the color scale. The possible values
of scale_loc are:

        scale_loc = b:  bottom of plot


        scale_loc = t:  top of plot


        scale_loc = l:  left of plot


        scale_loc = r:  right of plot




[Default scale_loc = b]
-MGL


[f][x]lon0/lat0/slat/length[m]



Draws a simple map scale centered on lon0/lat0.  Use -Lx to specify position in inch instead.
Scale is calculated at latitude slat, length is in km [miles if m is appended].
Use -Lf to get a "fancy" scale [Default is plain].
-MGQ


dpi



Sets the resolution in dots per inch of the raster image used
for color fill maps. Larger values of dpi produce larger
Postscript plot files. [Default is 100].
-MGS


scalefactor



The gridded data is multiplied by scalefactor.
This option is most often used flip the sign of the
data (scalefactor = -1). [Default no scaling]
-MGT


x/y/size/angle/font/just/text



Causes a text label to plotted on the map.
size is text size in points, angle is
measured in degrees counter-clockwise from horizontal,
fontno sets the font type, justify sets the alignment.
If fontno starts with a leading hyphen, then
the remainder of fontno is taken to be a
textstring with the desired fontname.  See the
gmtdefaults man page for names and numbers of available fonts
(or run pstext -L).  The alignment
number refers to the part of the textstring that will be mapped
onto the (x,y) point: 1 = Lower Left corner,
2 = Lower Center, 3 = Lower Right, 5 = Mid Left, 6 = Mid Center,
7 = Mid Right, 9 = Upper Left, 10 = Upper Center,
11 = Upper Right. This option may be given as many times as
needed.
-MGU


[/dx/dy/][label]



Draw Unix System time stamp on plot.  User may specify where the lower left corner
of the stamp should fall on the page relative to lower left corner of plot in inch [Default is (-0.75,-0.75)].  Optionally,
append a label, or c (which will plot the command string.)
-MVM


mesh_pen



Set pen attributes for mesh plot.  The mesh plot must be specified
with the -G option. See chapter 4.12 in the
GMT Technical reference for a discussion of GMT pen values.
[Defaults: width = 1, color = 0/0/0,
texture = solid].
-MVN


[null[/r/g/b]]



Draws a plane at the level of the null value (with
respect to the data in the grid file specified with the -I
option. If the optional r/g/b is provided,
the frontal facade between the plane and the data perimeter is
filled with this color. If -MVN is given by
itself, then mbm_grd3dplot causes
the null plane to be drawn at the minimum z-level and the facade
to be colored a light gray (r=g=b=200).
-O


root



Sets the root used to construct the filename of the output shellscript
(root.cmd) and names of files created when the shellscript is
run.  Normally the
name of the input grid file or grid file list is
used as the root.
-P


pagesize



This option sets the size of the page the plot will be centered
on. If the user does not set the plot scale, the plot will be
sized as large as will fit on the designated page. If the user
sets the plot scale such that the plot will not fit on the
designated page, a larger page will be used.
The supported page sizes are:


          American ANSI sizes:

          A     8.5 x 11.0 in.    ( 215.9 x  279.4 mm)

          B    11.0 x 17.0 in.    ( 279.4 x  431.8 mm)

          C    17.0 x 22.0 in.    ( 431.8 x  558.8 mm)

          D    22.0 x 34.0 in.    ( 558.8 x  863.6 mm)

          E    34.0 x 44.0 in.    ( 863.6 x 1117.6 mm)

          F    28.0 x 40.0 in.    ( 711.2 x 1016.0 mm)

          E1   44.0 x 68.0 in.    (1117.6 x 1727.2 mm)


          Metric ISO A sizes:

          A0   841.0 x 1189.0 mm  (33.11 x 46.81 in.)

          A1   594.0 x  841.0 mm  (23.39 x 33.11 in.)

          A2   420.0 x  594.0 mm  (16.54 x 23.39 in.)

          A3   297.0 x  420.0 mm  (11.69 x 16.54 in.)

          A4   210.0 x  297.0 mm  ( 8.27 x 11.69 in.)

          A5   148.0 x  210.0 mm  ( 5.83 x  8.27 in.)

          A6   105.0 x  148.0 mm  ( 4.13 x  5.83 in.)

          A7    74.0 x  105.0 mm  ( 2.91 x  4.13 in.)

          A8    52.0 x   74.0 mm  ( 2.05 x  2.91 in.)

          A9    37.0 x   52.0 mm  ( 1.46 x  2.05 in.)

          A10   26.0 x   37.0 mm  ( 1.02 x  1.46 in.)


          Metric ISO B sizes:

          B0   1000.0x 1414.0 mm  (39.37 x 55.67 in.)

          B1   707.0 x 1000.0 mm  (27.83 x 39.37 in.)

          B2   500.0 x  707.0 mm  (19.68 x 27.83 in.)

          B3   353.0 x  500.0 mm  (13.90 x 19.68 in.)

          B4   250.0 x  353.0 mm  ( 9.84 x 13.90 in.)

          B5   176.0 x  250.0 mm  ( 6.93 x  9.84 in.)

          B6   125.0 x  176.0 mm  ( 4.92 x  6.93 in.)

          B7    88.0 x  125.0 mm  ( 3.46 x  4.92 in.)

          B8    62.0 x   88.0 mm  ( 2.44 x  3.46 in.)

          B9    44.0 x   62.0 mm  ( 1.73 x  2.44 in.)

          B10   31.0 x   44.0 mm  ( 1.22 x  1.73 in.)


          Metric ISO C sizes:

          C0   914.4 x 1300.5 mm  (36.00 x 51.20 in.)

          C1   650.2 x  914.4 mm  (25.60 x 36.00 in.)

          C2   457.2 x  650.2 mm  (18.00 x 25.60 in.)

          C3   325.1 x  457.2 mm  (12.80 x 18.00 in.)

          C4   228.6 x  325.1 mm  ( 9.00 x 12.80 in.)

          C5   162.6 x  228.6 mm  ( 6.40 x  9.00 in.)

          C6   114.3 x  162.6 mm  ( 4.50 x  6.40 in.)

          C7    81.3 x  114.3 mm  ( 3.20 x  4.50 in.)

          MB-System large format sizes:


          m1  1371.6 x 1828.8 mm  (54.00 x 72.00 in.)

          m2  1371.6 x 2133.6 mm  (54.00 x 84.00 in.)

          m3  1371.6 x 2438.4 mm  (54.00 x 96.00 in.)

          m4  1524.0 x 1828.8 mm  (60.00 x 72.00 in.)

          m5  1524.0 x 2133.6 mm  (60.00 x 84.00 in.)

          m6  1524.0 x 2438.4 mm  (60.00 x 96.00 in.)

The default page size is A.
-Q


Normally, the output plot generation shellscript
includes lines which execute
a program to display the Postscript image on the screen.
This option causes those lines to be commented out so
that executing the shellscript produces a Postscript plot
but does not attempt to display it on the screen.
The program
to be used to display the Postscript is set
using mbdefaults;
the default value can be overridden by setting the environment
variable $MB_PS_VIEWER.
-R


west/east/south/north



west, east, south, and north specify the Region of interest.  To specify boundaries
in degrees and minutes [and seconds], use the dd:mm[:ss] format.  Append r if lower left and upper right
map coordinates are given instead of wesn.
You may ask for a larger w/e/s/n region to have more room between the image and the axes.
A smaller region than specified in the grdfile will result in a subset of the grid [Default is
region given by the grdfile].
-S


[color/shade]



This option enables effective histogram equalization of the
color and/or shading of the gridded data. The equalization is
not achieved by changing the data values, but rather by
constructing the color or shading tables so that
the boundaries in the tables encompass equal fractions of
the datapoints. This serves to focus color or shading contrasts
in value ranges corresponding to the bulk of the data values.
If -S is given alone or with color = 1,
it enables equalization of the color table used
for color or gray fill plots,  shaded or unshaded. If the plot
is to be shaded,  either by synthetic illumination (-G2)
or using an intensity file (-K and -G3 options), then
setting shade = 1 will cause the shading to be equalized.
Using -S0/1 will equalize the shading without
equalizing the color table.
-U


orientation



Normally the orientation of the plot (portrait or landscape)
is selected automatically so as to maximize the plot scale.
The -U option allows the user to set the plot orientation. If
orientation = 1, a portrait plot will be produced; if
orientation = 2, a landscape plot will be produced.
-W


[color_style[/palette[ncolors]] | cptfile]



This option controls the color scheme used for color
fill plots.

If color_style = 1 [default], then
the color scheme used will be a continuous grading
of colors. If color_style = 2, the color scheme
will be a set of discrete color intervals. The color
palette used is set using palette. Seven palettes
are available:

        palette = 1:    Haxby colors [default]


        palette = 2:    high Intensity colors


        palette = 3:    low Intensity colors


        palette = 4:    grayscale


        palette = 5:    uniform grayscale


        palette = 6:    uniform black


        palette = 7:    uniform white


The RGB definitions of the color palettes are:

color palette 1 - Haxby Color Table

  red:   255 255 255 255 240 205 138 106  50  40  37

  green: 255 186 161 189 236 255 236 235 190 127  57

  blue:  255 133  68  87 121 162 174 255 255 251 175

color palette 2 - High Intensity Colors

  red:   255 255 255 255 128   0   0   0   0 128 255

  green:   0  64 128 255 255 255 255 128   0   0   0

  blue:    0   0   0   0   0   0 255 255 255 255 255

color palette 3 - Low Intensity Colors

  red:   200 194 179 141  90   0   0   0   0  90 141

  green:   0  49  90 141 179 200 141  90   0   0   0

  blue:    0   0   0   0   0   0 141 179 200 179 141

color palette 4 - Grayscale

  red:   255 230 204 179 153 128 102  77  51  26   0

  green: 255 230 204 179 153 128 102  77  51  26   0

  blue:  255 230 204 179 153 128 102  77  51  26   0

color palette 5 - Uniform Grayscale

  red:   128 128 128 128 128 128 128 128 128 128 128

  green: 128 128 128 128 128 128 128 128 128 128 128

  blue:  128 128 128 128 128 128 128 128 128 128 128

color palette 6 - Uniform Black

  red:     0   0   0   0   0   0   0   0   0   0   0

  green:   0   0   0   0   0   0   0   0   0   0   0

  blue:    0   0   0   0   0   0   0   0   0   0   0

color palette 7 - Uniform White

  red:   255 255 255 255 255 255 255 255 255 255 255

  green: 255 255 255 255 255 255 255 255 255 255 255

  blue:  255 255 255 255 255 255 255 255 255 255 255

The Haxby colors have been adapted from a palette
developed by Dr. William Haxby of the Lamont-Doherty
Earth Observatory; this palette is pleasing to the
eye and well suited for shading. The high intensity
colors describe linear paths through RGB space from
red to blue to green to purple; because the colors are high
intensity they are not well suited to shading.
The low intensity colors are similar to the high
intensity, but muted and thus well suited to shading.
The grayscale palette runs linearly from white to
black and is commonly used for plots of sidescan and amplitude
data. The uniform grayscale is useful for non-color
shaded relief plots.

The ncolors parameter sets the number of color
values used in plotting, whether the colors are
represented in a continuous color scale or a
stepped, discrete color scale [default is 11].

If the option argument is the path to an existing GMT
color palette (CPT) file, then that CPT file and its
color scheme will be used for the plot
-V


Causes mbm_grd3dplot to operate in "verbose" mode
so that it outputs
more information than usual.
-X


Normally, mbm_grd3dplot creates an executable shellscript and
then exits.  This option will cause the shellscript to be executed
in the background before mbm_grd3dplot exits.
-Y


Normally, mbm_grd3dplot generates nicely rounded numbers
for the boundaries of the color palette. Often, the resulting
color bounds extend well outside the range of the gridded data.
This option causes
the color boundaries to be uniformly distributed between the
minimum and maximum values of the grid.
-Z


min/max



This option overrides the minimum and maximum values of
the gridded data, affecting the color palette and the
contour interval if those parameters are not specified
by the user.


 
EXAMPLES

Suppose we have obtained two GRD files with dimensions of
127 by 194, one containing gridded bathymetry
(grd_sb2112_example_bath) and the other gridded sidescan
(grd_sb2112_example_ss). In order to generate a shellscript
which will in turn generate a 3D color shaded relief
view of the bathymetry, we use the -G2 option.
The grid file is in
bathymetry (positive down) rather in topography (positive
up), so the bathymetry needs to be rescaled by multiplying
by -1 (-MGS-1). We choose an illumination magnitude of 0.4
and an illumination azimuth of 45 degrees (-A0.4/45). We
also choose a perspective azimuth of 250 degrees and an
elevation of 30 degrees (-E240/30):


        mbm_grd3dplot -Igrd_sb2112_example_bath \


            -G2 -A0.4/45 -E250/30 -MGS-1 -X -V \


            -Osb2112_example_bath3d


Now, to generate a 3D perspective view of the gridded
bathymetry shaded using the gridded sidescan data, we
use the -G3 and -K options.
We want the sidescan data to
be histogram equalized, so we use -S0/1. We also want
the shading to be more prominent than the default
shading magnitude of 0.2 would produce, so we use -A0.5:


        mbm_grd3dplot -Igrd_sb2112_example_bath \


            -Kgrd_sb2112_example_ss \


            -G3 -A0.5 -E250/30 -D0/1 \


            -S0/1 -MGS-1 -X -V \


            -Osb2112_example_bathss3d


The first example produces and executes a plot generation
shellscript called sb2112_example_bath3d.cmd and the second
produces a shellscript called sb2112_example_bathss3d.cmd.
As an example, the contents of the plotting shellscript
"sb2112_example_bathss3d.cmd" are:


 #

 # Shellscript to create Postscript plot of data in grd file

 # Created by macro mbm_grd3dplot

 #

 # This shellscript created by following command line:

 # mbm_grd3dplot -Igrd_sb2112_example_bath \

 #      -Kgrd_sb2112_example_ss -G3 -A0.5 \

 #      -E250/30 -D0/1 -S0/1 -MGS-1 -X -V \

 #      -Osb2112_example_bathss3d

 #

 # Save existing GMT defaults

 echo Saving GMT defaults...

 gmtdefaults -L > gmtdefaults$$

 #

 # Set new GMT defaults

 echo Setting new GMT defaults...

 gmtset ANOT_FONT Helvetica

 gmtset LABEL_FONT Helvetica

 gmtset HEADER_FONT Helvetica

 gmtset ANOT_FONT_SIZE 8

 gmtset LABEL_FONT_SIZE 8

 gmtset HEADER_FONT_SIZE 10

 gmtset FRAME_WIDTH 0.074999999999999997

 gmtset TICK_LENGTH 0.074999999999999997

 gmtset PAGE_ORIENTATION LANDSCAPE

 gmtset COLOR_BACKGROUND 0/0/0

 gmtset COLOR_FOREGROUND 255/255/255

 gmtset COLOR_NAN 255/255/255

 #

 # Make color palette table file

 echo Making color palette table file...

 echo  -4500  37  57 175  -4350  40 127 251 > \

        sb2112_example_bathss3d.cpt


 echo  -4350  40 127 251  -4200  50 190 255 >> \

        sb2112_example_bathss3d.cpt


 echo  -4200  50 190 255  -4050 106 235 255 >> \

        sb2112_example_bathss3d.cpt


 echo  -4050 106 235 255  -3900 138 236 174 >> \

        sb2112_example_bathss3d.cpt


 echo  -3900 138 236 174  -3750 205 255 162 >> \

        sb2112_example_bathss3d.cpt


 echo  -3750 205 255 162  -3600 240 236 121 >> \

        sb2112_example_bathss3d.cpt


 echo  -3600 240 236 121  -3450 255 189  87 >> \

        sb2112_example_bathss3d.cpt


 echo  -3450 255 189  87  -3300 255 161  68 >> \

        sb2112_example_bathss3d.cpt


 echo  -3300 255 161  68  -3150 255 186 133 >> \

        sb2112_example_bathss3d.cpt


 echo  -3150 255 186 133  -3000 255 255 255 >> \

        sb2112_example_bathss3d.cpt


 #

 # Rescale data

 echo Rescaling data by -1...

 echo Running grdmath...

 grdmath grd_sb2112_example_bath -1 x = \

        grd_sb2112_example_bath.scale


 #

 # Get shading array

 echo Getting shading array...

 echo Running grdhisteq...

 grdhisteq grd_sb2112_example_ss \

        -Ggrd_sb2112_example_ss.eq -N


 echo Running grdmath...

 grdmath grd_sb2112_example_ss.eq -0.5 x \

        = grd_sb2112_example_ss.int


 rm -f grd_sb2112_example_ss.eq

 #

 # Make 3D view

 echo Running grdview...

 grdview grd_sb2112_example_bath.scale \

        -Jm13.678801784792578 \


        -Jz0.0014760910157720331 \


        -E250/30 \


        -R114.221/114.421/-31.9001/-31.6377 \


        -Csb2112_example_bathss3d.cpt \


        -N-4499.4399999999996/200/200/200 \


        -Igrd_sb2112_example_ss.int \


        -Qi \


        -P -X1.8081565710006675 -Y2 -K -V \


        > sb2112_example_bathss3d.ps


 #

 # Make color scale

 echo Running psscale...

 psscale -Csb2112_example_bathss3d.cpt \

        -D2.4418/-0.5000/4.8837/0.1500h \


        -B":.Data Values:" \


        -P -K -O -V >> sb2112_example_bathss3d.ps


 #

 # Make basemap

 echo Running psbasemap...

 psbasemap -Jm13.678801784792578 \

        -Jz0.0014760910157720331 \


        -E250/30 \


        -R114.221/114.421/-31.9001/-31.6377 \


        -B5m/5m:."Data File grd_sb2112_example_bath":WSZ \


        -P -O -V >> sb2112_example_bathss3d.ps


 #

 # Delete surplus files

 echo Deleting surplus files...

 rm -f sb2112_example_bathss3d.cpt

 rm -f grd_sb2112_example_bath.scale

 #

 # Reset GMT default fonts

 echo Resetting GMT fonts...

 mv gmtdefaults$$ .gmtdefaults

 #

 # Run xpsview

 echo Running xpsview in background...

 xpsview -ps a -maxp 4m sb2112_example_bathss3d.ps &

 #

 # All done!

 echo All done!

 
SEE ALSO

grdimage(1), grdcontour(1),
mbdefaults(1), mbgrid(1), mbsystem(1),
mbm_grd3dplot(1), mbm_plot(1),
psbasemap(1), pstext(1), psxy(1)

 
BUGS

By making this macro more useful, we have also made it
more complex.



 
Index

NAME

VERSION

SYNOPSIS

DESCRIPTION

AUTHORSHIP

SIMPLE DESCRIPTION OF BASIC OPTIONS

COMPLETE DESCRIPTION OF OPTIONS

EXAMPLES

SEE ALSO

BUGS

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