Re: [ferret_users] empty plot without error

[Joshua Osborne - NOAA Affiliate <joshua.osborne@xxxxxxxx>]

Hi Ryo,

It looks like you are correct about PyFerret not finding the range of xs_rot_sft. I have tried the following with the file you provided:

yes? plot/i=370:380/vs xs_rot_sft, ys_rot_sft

which produces the plot, and

yes? plot/i=1:5/vs xs_rot_sft, ys_rot_sft

which does not (blank image).

Explicitly setting the limits like so,

yes? plot/vs/hlim=112:115/vlim=-25:0 xs_rot_sft, ys_rot_sft

will also produce a plot. This seems to suggest that there is an issue with 

I have created an issue on github for this: https://github.com/NOAA-PMEL/PyFerret/issues/80. I'll add updates there as I look into this.

Thanks,

Joshua

On Sat, Oct 3, 2020 at 8:53 AM Ryo Furue <furue@xxxxxxxxxx> wrote:

Dear Ferret users and developer team,

I've come across a very strange phenomenon:

yes? set data track-rot_sft.nc

yes?  plot/vs xs_rot_sft, ys_rot_sft

results in an empty window.  No axes and no letterings.  Just perfectly white. There are absolutely no error messages. [Is this because all the x values are (almost) the same? so that Ferret has failed to determine the range of the horizontal axis?]

Either variable can be listed and plotted:

yes? list xs_rot_sft

yes? plot xs_rot_sft

Only "plot/vs" fails to wo