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20030918: GEMPAK and pseudo-color on Linux

David,

The problem with 8 bit color under Xfree86 4.2 is that
the window manager allocates most of the colors, and you
are left with only 12 free color cells. There were reportedly
some patches to the XFree86 to remedy that problem
(I'm assuming you have the same problem under Debian as
RH). Likely your old RH7.0 at home is running an older version
of XFree86 (which is a good thing in this case!).

I haven't looked at the current state of XFreee86 patches since
going to 24 bit under Linux. Users were doing CVS checkout of source for
patches and rebuilding....hopefully its easier than that now.

Note that you can also sample the 1km gini in either
space or resolution using the SECTOR program which is
useful if you want 1 faster loading (less memory) image
at top resolution for your area, or don't need 1km resolution for a larger area.

Steve Chiswell.



>From: David Ovens <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200309182106.h8IL6jk1020275

>Hello,
>
>I have an older version of GEMPAK on my Linux box (RedHat 7.0) at home
>-- 5.6.A? 5.6.D? -- and the only way I can get it to work is to run
>with PseudoColor (8-bit) not DirectColor (24-bit).  I've lived and
>worked with that just fine.
>
>Now, I am trying to look at 10 EAST-CONUS/1km/VIS/ GINI images setting
>the "Roam" to "Size of Image".  Since my giniinfo program (available
>if you want it as a GEMPAK contrib program) tells me the images are
>5120x5120, you can imagine that this is going to require some memory.
>Close to 1 GB in 24-bit mode, but considerably less in 8-bit.
>Unfortunately, at work here, I cannot seem to get any GEMPAK programs
>to run under 8-bit (the opposite of home).  
>
>Is this due to Debian Linux at work or some change in GEMPAK?
>
>Any idea how I can run in 8-bit with 5.6.H or later GEMPAK on Linux?
>
>The types off errors I'm getting are these:
>
>sfmap errors:
>Creating process: xw for queue 163843
> [GEMPLT -46]  NCLRAL - Can not allocate read/write colors.
> Parameters requested: AREA,GAREA,SATFIL,RADFIL,SFPARM,DATTIM,SFFILE,COLORS,
> MAP,LATLON,TITLE,CLEAR,PANEL,DEVICE,PROJ,FILTER,TEXT,LUTFIL,STNPLT,CLRBAR,
> IMBAR.
> GEMPAK-SFMAP>e
>
>garp errors:
>G A R P - v2.1 starting...
>Warning: Cannot allocate colormap entry for "deepskyblue4"
>InitGempakColorMap:  Can't allocate Graphic colors.
>GarpInitialize:  GempakInit failed
>Main: Initialization failed.  Exiting
>
>ntl errors:
>Warning: Cannot allocate colormap entry for "grey75"
>Resource File:  /home/disk/ldm/NAWIPS-5.6.H/resource/Ntop
>graphic, satellite, radar, fax -- 33 95 20 2
>         Request total # of colors = 150
>X Error of failed request:  BadValue (integer parameter out of range for opera
> tion)
>  Major opcode of failed request:  86 (X_AllocColorCells)
>  Value in failed request:  0x0
>  Serial number of failed request:  413
>  Current serial number in output stream:  413
>
>freeColors shows 12:
>                       CURRENTLY YOUR SYSTEM HAS:
>               ========================================
>                   256 total color cells.
>                   12 free  color cells.
>                   244 shared read-only color cells.
>                   0 private writeable color cells.
>               ========================================
>
>and the rest is xdpyinfo output:
>name of display:    :0.0
>version number:    11.0
>vendor string:    The XFree86 Project, Inc
>vendor release number:    40201000
>XFree86 version: 4.2.1
>maximum request size:  4194300 bytes
>motion buffer size:  256
>bitmap unit, bit order, padding:    32, LSBFirst, 32
>image byte order:    LSBFirst
>number of supported pixmap formats:    7
>supported pixmap formats:
>    depth 1, bits_per_pixel 1, scanline_pad 32
>    depth 4, bits_per_pixel 8, scanline_pad 32
>    depth 8, bits_per_pixel 8, scanline_pad 32
>    depth 15, bits_per_pixel 16, scanline_pad 32
>    depth 16, bits_per_pixel 16, scanline_pad 32
>    depth 24, bits_per_pixel 32, scanline_pad 32
>    depth 32, bits_per_pixel 32, scanline_pad 32
>keycode range:    minimum 8, maximum 255
>focus:  PointerRoot
>number of extensions:    30
>    BIG-REQUESTS
>    DEC-XTRAP
>    DOUBLE-BUFFER
>    DPMS
>    Extended-Visual-Information
>    FontCache
>    GLX
>    LBX
>    MIT-SCREEN-SAVER
>    MIT-SHM
>    MIT-SUNDRY-NONSTANDARD
>    NV-CONTROL
>    NV-GLX
>    NVIDIA-GLX
>    RECORD
>    RENDER
>    SECURITY
>    SHAPE
>    SYNC
>    TOG-CUP
>    XC-APPGROUP
>    XC-MISC
>    XFree86-Bigfont
>    XFree86-DGA
>    XFree86-Misc
>    XFree86-VidModeExtension
>    XInputExtension
>    XKEYBOARD
>    XTEST
>    XVideo
>default screen number:    0
>number of screens:    1
>
>screen #0:
>  dimensions:    1280x1024 pixels (342x271 millimeters)
>  resolution:    95x96 dots per inch
>  depths (7):    8, 1, 4, 15, 16, 24, 32
>  root window id:    0x41
>  depth of root window:    8 planes
>  number of colormaps:    minimum 1, maximum 1
>  default colormap:    0x20
>  default number of colormap cells:    256
>  preallocated pixels:    black 0, white 1
>  options:    backing-store YES, save-unders YES
>  largest cursor:    64x64
>  current input event mask:    0x0
>  number of visuals:    6
>  default visual id:  0x21
>  visual:
>    visual id:    0x21
>    class:    PseudoColor
>    depth:    8 planes
>    available colormap entries:    256
>    red, green, blue masks:    0x0, 0x0, 0x0
>    significant bits in color specification:    8 bits
>  visual:
>    visual id:    0x22
>    class:    GrayScale
>    depth:    8 planes
>    available colormap entries:    256
>    red, green, blue masks:    0x0, 0x0, 0x0
>    significant bits in color specification:    8 bits
>  visual:
>    visual id:    0x23
>    class:    StaticColor
>    depth:    8 planes
>    available colormap entries:    256
>    red, green, blue masks:    0x7, 0x38, 0xc0
>    significant bits in color specification:    8 bits
>  visual:
>    visual id:    0x24
>    class:    TrueColor
>    depth:    8 planes
>    available colormap entries:    8 per subfield
>    red, green, blue masks:    0x7, 0x38, 0xc0
>    significant bits in color specification:    8 bits
>  visual:
>    visual id:    0x25
>    class:    DirectColor
>    depth:    8 planes
>    available colormap entries:    8 per subfield
>    red, green, blue masks:    0x7, 0x38, 0xc0
>    significant bits in color specification:    8 bits
>  visual:
>    visual id:    0x26
>    class:    StaticGray
>    depth:    8 planes
>    available colormap entries:    256
>    red, green, blue masks:    0x0, 0x0, 0x0
>    significant bits in color specification:    8 bits
>
>
>
>Thanks,
>
>David
>-- 
>
>David Ovens            e-mail: address@hidden
>(206) 685-8108          plan: Real-time MM5 forecasting for Pacific Northwest
>Research Meteorologist
>Dept of Atmospheric Sciences, Box 351640
>University of Washington 
>Seattle, WA  98195
>