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Hi Ryo, Well that's interesting (and what a wonderful word, hysteresis). I imagine there are un-initialized variables somewhere, or something along those lines. Fortran does some unexpected things saving values between one pass through a piece of code and the next. Actually /SIGDIG (which comes from the old PPLUS syntax nsig) is a big of a misnomer isn't it. We're changing the number of digits not the number of significant digits. Thank you for the report. I'll have a look. Ansley Thank you for the report. On 1/10/2013 1:57 PM, Ryo Furue wrote:
Ferret developers, I'm trying to control the format of contour labels and I'm bewildered by the SIGDIG qualifier. I suppose there is a bug there. I did this test: yes? set data levitus_climatology yes? set region/y=60s:40s yes? contour/lev=(5,15,1)/k=1 temp !--(0) yes? contour/lev=(5,15,1)/k=1/sigdig=1 temp !--(1) yes? contour/lev=(5,15,1)/k=1/sigdig=2 temp yes? contour/lev=(5,15,1)/k=1/sigdig=3 temp yes? contour/lev=(5,15,1)/k=1/sigdig=4 temp yes? contour/lev=(5,15,1)/k=1/sigdig=5 temp yes? contour/lev=(5,15,1)/k=1/sigdig=4 temp yes? contour/lev=(5,15,1)/k=1/sigdig=3 temp yes? contour/lev=(5,15,1)/k=1/sigdig=2 temp yes? contour/lev=(5,15,1)/k=1/sigdig=1 temp yes? contour/lev=(5,15,1)/k=1 temp !. . . Go back to (1) . . . The results are Without SIGDIG:"5.0", "6.0", . . . , "12.0" SIGDIG=1 gives "5.0", "6.0", . . . , "12.0" SIGDIG=2 gives "5", "6", . . . , "12" SIGDIG=3 gives "5.0", "6.0", . . . , "12.0" SIGDIG=4 gives "5.00", "6.00", . . . , "12.00" SIGDIG=5 gives "5.000", "6.000", . . . , "12.000" SIGDIG=4 gives "5.0000","6.0000",. . . , "12.0000" SIGDIG=3 gives "5.000", "6.000", . . . , "12.000" SIGDIG=2 gives "5.00", "6.00", . . . , "12.00" SIGDIG=1 gives "5.0", "6.0", . . . , "12.0" Without SIGDIG:"5", "6", . . . , "12" As you can see, there is "hysteresis"! I've verified that the above cycle exactly repeats. Since at least I've found the pattern, I can exactly control the format of my contour labels. :-) FERRET v6.81 Linux 2.6.32-279.1.1.el6.x86_64 32-bit - 07/23/12 10-Jan-13 11:48 Cheers, Ryo |