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17.1 CMAP Overview
The ANSYS and DISPLAY programs keep track of colors by assigning them to
index numbers. The correlation between index numbers and their assigned colors
defines a color map. You can use the CMAP program to create a custom color
map file. CMAP also supports redirection of standard input and output. To run
this program, you must have a cursor device such as a mouse.
17.2 Starting CMAP as a Stand Alone Program
The CMAP program can be run separately from the ANSYS program. You can
start the CMAP program from the XANSYS launcher (UNIX systems), from an
icon (Windows systems), from UNIX command level, or from within the ANSYS
program.
17.2.1 Starting the CMAP Program from the UNIX Launcher
You can enter the CMAP program from the ANSYS UNIX launcher. Here is the
procedure to follow:
1. Select the CMAP Utility option from the XANSYS launcher. CMAP
displays the following prompt:
Enter Display Device Name:
Press RETURN if current value is correct
CMAP may go straight to the next step, however, if it does stop at this
prompt without continuing, enter the appropriate graphics device name.
The device name can be displayed by issuing the /SHOW command.
2. CMAP displays the following prompt:
Set Display Device Specifications
(Press RETURN if the current value is correct.)
Enter Number of Bit Planes (Currently 8)
3. Enter the number of color planes. If you are using a 16-color device, enter
4 (i.e., 16 = 24). If you are using a 256-color device, use the default value
of 8 (256 = 28). Press Enter if you do not need to make any changes.
CMAP displays the following prompt:
Enter the number of contours (Maximum = 128) (currently 9):
*** NOTE - Contour colors can be independently changed ONLY on C-option
display devices. This will be ignored on all other devices.
Note-You can change contour colors independently only if the graphics
device name is set to X11C. This will be ignored on other devices.
4. Enter the number of contours or press Enter if you do not need to make
any changes. CMAP displays the following prompt:
Enter Color Map File Name (Currently FILE.CMAP):
5. Enter the name of the color map file that you want to edit or create.
CMAP displays the status of your CMAP settings:
Display Device = Current device driver name
Bit Planes = Number of color planes, i.e., 4 or 8
Contours = Number of contours, i.e., 9, 128, etc.
Color Map File = Specified filename and extension.
OK? Yes (Default) or No:
6. If the settings are acceptable, enter Yes. You can further customize the
color map using the CMAP program's single control panel. See FIgure
17-2 for an illustration of the control panel.
17.2.2 Starting the CMAP Program on Windows Systems
To start CMAP from Windows, click on the Start button and choose
Programs>ANSYS 5.5>CMAP Utility. The following window appears:
Figure 17-1 CMAP Utility Window on WIndows Systems
You may change the following options as indicated:
Display Device Name
Sets the device type. The options are WIN32 and WIN32C.
Number of contours
Sets the number of contours that can be independently changed. This is
valid only on WIN32C devices.
Color Map File Name
Saves the current color file for later use.
17.2.3 Starting the CMAP Program from UNIX Command Level
You also can start the CMAP program by issuing the following command from
UNIX command level:
cmap55
You can specify either or both of the following command options with the cmap5x
command:
| -j
|
Jobname
|
| -d
|
Device_Type
|
These options have the same function as in the ANSYS program. However,
CMAP does not support the following command line options: -m (memory), -db
(database), -b (batch mode), -l (language), -p (product), -v (version), and -s
(activate the START5x.ANS file).
A number of prompts appear. If you have any questions about how to respond to
them, see Section 17.2.
17.3 Using CMAP From Within ANSYS
The CMAP program can be accessed from within ANSYS. The command /CMAP, Fname, Ext, Dir, Kywrd, NCNTR will
either load an existing CMAP file (no value specified for Kywrd), or create a new
CMAP file (Kywrd=CREATE). See the /CMAP command in the ANSYS Commands Reference for additional
information. The CMAP program is also accessed via the following menu paths:
Utility Menu>PlotCtrls>Style>Colors>Load Color Map
Utility Menu>PlotCtrls>Style>Colors>Create Color Map.
17.4 Customizing the Color Map
Once you activate the CMAP program, the CMAP control panel appears:
Figure 17-2 CMAP control panel
The control panel will have a slightly different appearance on a C-option device
(for instance, X11C):
Figure 17-3 CMAP control panel for C-option devices
This control panel is easy to use. Using mouse picks, simply select a current
color, red-green-blue specifications, or any of the six function buttons. The
functions are defined as follows:
- DFLT CLR - Restores default color specification for the current color
index.
- DFLT MAP - Restores the default color specification for the entire color
map.
- QUIT - Exits the CMAP program.
- COPY CLR - Copies the next picked color specification to the current
color index, as in the following example:
1. Pick index 6 (cyan). The "current color" box will now display cyan.
2. Pick the "COPY CLR" button.
3. Pick index 12 (red). The picked color (red) is copied into the current
index (6). The "current color" box also displays red.
- REVERSE - Reverses the specification of the contour color indices
(that is, reverses the order of colors in indices 4 through 12, for a
9-contour color map). For a standard color map, the "high contour"
will change from red to blue, and the "low contour" from blue to red.
- WRITE - Writes the color map file
To change the color specifications for an index, you must first select that index as
the current color by picking the desired index bar from the vertical list of color
bars. The picked index's color will appear in the "current color" box. Next, change
the index's color specifications by picking the appropriate positions of the RED,
GRN, and BLU selection bars in the bottom right corner of the screen. After each
position is selected, the color of the "current color" bar and of the picked index bar
will be updated to reflect the current specification.
The "/PNUM INDEX" shown on the CMAP control panel maps the correlation
between entity numbers and colors. For example, in a display of areas, with area
numbering ON, the color map shown in Figure 17-2 will cause area number 3 to
be displayed with the color given by color index 12, area number 7 to be displayed
with the color given by color index 11, and so on.
Once you have created a new color map file (using the WRITE button and have
exited the CMAP program (using the QUIT button), you can then use the /CMAP command in either the ANSYS or
DISPLAY program to read in your customized color map file.
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