Thread: PLOT command

Started: 2006-06-04 16:47:25
Last activity: 2006-06-05 16:39:11
Topics: SAC Help
feigelso@rohan.sdsu.edu
2006-06-04 16:47:25
Sac-help,

I recently downloaded SAC for my Mac. This is my first time using SAC.
I've been reading the SAC manual on the web and going through the
examples. When I type PLOT, nothing happens. There isn't an error
message or a blank window that appears, nothing. Do you know why it's not
working?

Thanks for your help!

Leah




  • Arthur Snoke
    2006-06-04 20:03:09
    I assum you were in xterm, otherwise you would have gotten an error
    message. For plots to work, you need to be in X windows.

    My guess is that you had nothing in memory. You need somethig to plot.

    SAC> funcgen seismogram
    SAC> plot
    SAC>

    That brings up a widow with a seismogram.

    Hope this helps.

    On Sun, 4 Jun 2006 feigelso<at>rohan.sdsu.edu wrote:

    Sac-help,

    I recently downloaded SAC for my Mac. This is my first time using SAC.
    I've been reading the SAC manual on the web and going through the
    examples. When I type PLOT, nothing happens. There isn't an error
    message or a blank window that appears, nothing. Do you know why it's not
    working?

    Thanks for your help!

    Leah



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    • Rob Casey
      2006-06-05 16:39:11

      Hi Leah-

      Mac OS X doesn't natively install or boot up X-Windows ready, but it
      is easy to make is support X-Windows. You need to have the X11
      Client App installed on the Mac before you can have SAC send X-
      Windows plots to the screen.

      If you do not have X11 Client already on your machine, then you need
      to do one of the following. For Panther (10.3), you can download the
      X11 Client from the Apple website. For Tiger, you can only install
      the X11 client from the Install Disk. It strangely comes as a second
      install step under 'Optional Installs' or something like that when
      the installation menu pops up. The Panther and Tiger X11 Clients are
      not compatible, so make sure you install the right one.

      Once you have X11 Client installed, you have to activate it by
      double-clicking on the icon. I keep X11 on my Toolbar for easy
      access. Otherwise, you'll find it in /Applications/Utilities. Once
      it is running, you will get an X11 term window on your screen.

      In the X11 screen, you have to turn on window permissions, and the
      easiest way to do it is with the command 'xhost +', which just allows
      all hosts to send X-Windows directives to your screen. Then, in any
      of your terminal windows, you want to set your DISPLAY environment
      variable to <your-host>:0.0, or localhost:0.0. At this point, you
      can run SAC and your PLOT directives should work.

      You can shell script some of these operations to speed up your
      startup of SAC. I haven't tried scripting the startup of X11, but I
      know that you can run .app files from the command line with the
      'open' directive.

      -Rob

      On Jun 4, 2006, at 10:03 AM, Arthur Snoke wrote:

      I assum you were in xterm, otherwise you would have gotten an error
      message. For plots to work, you need to be in X windows.

      My guess is that you had nothing in memory. You need somethig to
      plot.

      SAC> funcgen seismogram
      SAC> plot
      SAC>

      That brings up a widow with a seismogram.

      Hope this helps.

      On Sun, 4 Jun 2006 feigelso<at>rohan.sdsu.edu wrote:

      Sac-help,

      I recently downloaded SAC for my Mac. This is my first time using
      SAC.
      I've been reading the SAC manual on the web and going through the
      examples. When I type PLOT, nothing happens. There isn't an error
      message or a blank window that appears, nothing. Do you know why
      it's not
      working?

      Thanks for your help!

      Leah


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