<div dir="ltr"><div>Hello,</div><div><br></div><div>I am paneling some contour plots using gsn_panel. Each panel is a contour plot corresponding to different data from unique files. If a file is missing, in lieu of calling gsn_csm_contour, I call gsn_csm_blank_plot to keep the workspace symmetric. This works except when gsn_csm_blank_plot is the "upper-left-most" panel. In that case, gsn_panel fails and returns the error:</div><div><br></div><div>fatal:Variable (mono_fill_scl) is undefined<br></div><div><br></div><div>I found this old ncl-talk ticket from 2017:</div><div><a href="http://mailman.ucar.edu/pipermail/ncl-talk/2017-April/008585.html" target="_blank">http://mailman.ucar.edu/pipermail/ncl-talk/2017-April/008585.html</a></div><div><br></div><div>There it describes how the gsnPanelLabelBar resource doesn't play nicely when the plots being paneled are X-Y plots. Indeed, when I set this resource to False my code runs successfully, however I am not creating any X-Y plots. To make matters more confusing, if I call gsn_csm_blank plot in any other position than the "upper-left-most", then it works just fine. It's only when the "upper-left-most" panel is gsn_csm_blank_plot that my script fails.</div><div><br></div><div>It looks like based on the NCL documentation that "The common label bar is draw from the first plot, and
assumes all are the same." (<a href="https://www.ncl.ucar.edu/Applications/panel.shtml" target="_blank">https://www.ncl.ucar.edu/Applications/panel.shtml</a>). Also on that page, I see a resource called "gsnPanelScalePlotIndex", which is used to control which plot in the list of plots to panel to obtain scale factor information from. Is there a way to control the same thing but for the common label bar?</div><div><br></div><div>Thanks in advance!</div><div><br></div><div>-Dan<br></div></div>