This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
John, What is your window size being used with the GIF driver. The default GF will be 70% of the X window screen size (typically about 900x700 if you have a 1280x1024 display). On the other, since there is no display involved with the GIF driver, it defaults to 640x480, but you can override this in your DEVICE xsize;ysize setting which will make it easier to control font size and appearance. Also note that the GEMPAK help provides help on TRACE, while the parameters that the web page accesses are TRACE1...TRACE1, so the number has to be removed from the web query string. The actual box for each trace however is limited to 1/ntrace of the plot region and as you said, the range value is associate with data range not axis size in pixels. Steve Chiswell Unidata User Support > Hello, > Plots from sfgram differ when produced with device=gf and gif. The > whitespace between the > TRACE boxes is relatively smaller when gif is used. This is a problem > for us when we want to > use gif in a cron script. The more squat TRACE boxes cause truncation of > default-sized text and, > in some cases, graphics. We don't seem to be able to get xvfb for our > Macintosh systems, so are > commited to gif. > We are trying the approach of using a smaller text size, but this has > disadvantages. It looks to > me that the 'range' specification in the TRACE parameter is for the data > range, but if it is for the > y axis range and scale, please tell me more. (The link to the TRACE > parameter on the SFGRAM > page in the Chapter 4 online help file gives an error, as if there is a > broken link or something. The > TRACE page in Chapter 3 doesn't tell me enough.) > I can send the script, and examples of the images if needed. > Thanks, John M. > > Ticket Details =================== Ticket ID: URP-287688 Department: Support GEMPAK Priority: Normal Status: Closed