matplotlib - error setting axis limits for y1

Matplotlib Debug [mdailyWeather] prefs cleaned.
Matplotlib [10dayForecast] chart updated successfully.
Matplotlib Warning [mdailyWeather] Error setting axis limits for Y1. Will rely on Matplotlib to determine limits.
Matplotlib Warning [mdailyWeather] chart updated with errors. See plugin log for more information.
Matplotlib Warning [pool temp trends] Error setting axis limits for Y1. Will rely on Matplotlib to determine limits.
Matplotlib Warning [pool temp trends] chart updated with errors. See plugin log for more information.
Matplotlib [weatherAlert] chart updated successfully.
Matplotlib ==================== Redraw Charts Now Menu Action Complete ====

was playing with some settings, noticed I can mirror y values on right axis

checked the setting, also checked keep the other y.

didn't like it, so I unchecked both mirroring related boxes, now I get the above error when I try to redraw the charts.

Your help would be appreciated.

Thanx

dave

Hi Dave -- sorry you're having trouble. Take a look at the Y axis limits settings for the chart device. The plugin is saying that there's something amiss with those settings.

Screen Shot 2019-05-04 at 5.00.36 PM.png (40.58 KiB) Viewed 2426 times

Did that... they are both set to NONE...

Interesting, if i set limits with actual numbers, error goes away.

Further investigation ... appears a data point i removed, ie not available in the csv, still shows in the device /chart as a selection

Further investigation ... appears a data point i removed, ie not available in the csv, still shows in the device /chart as a selection

I just want to be sure I understand. You removed a CSV source file, but that source still shows up under the device as a data source for one of the lines?

If that's the case, you should get a warning like this:

Code: Select all

   Matplotlib Warning              [Matplotlib - chart name] Error downloading CSV data: [Errno 2] No such file or directory: '/Users/dave/Documents/archive/dave from bc.csv'. See plugin log for more information.


image from line chart and csv engine

You can have as many CSV files in the folder as you like, and they don't have to be managed by a CSV Engine device. Whatever is in the folder will show up as a valid source.

If you have eliminated data and no longer need it, then I'd suggest deleting the files from the data folder or moving them to another location.

Thank you for that...

I managed to clean out the old/changed csv files,


plug in log looks like this after a refresh, noting y1 axis limits still. As far as I can tell, all the data is positive

[10dayForecast] chart updated successfully.
2019-05-06 11:50:44.615 CRITICAL Plugin.pluginErrorHandler !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! TRACEBACK !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
2019-05-06 11:50:44.617 CRITICAL Plugin.pluginErrorHandler !!! Traceback (most recent call last):
2019-05-06 11:50:44.617 CRITICAL Plugin.pluginErrorHandler !!! File "plugin.py", line 4458, in format_axis_y1_min_max
2019-05-06 11:50:44.617 CRITICAL Plugin.pluginErrorHandler !!! y_axis_min = y_min * (1 - (1 / y_min ** 1.25))
2019-05-06 11:50:44.618 CRITICAL Plugin.pluginErrorHandler !!! ValueError: negative number cannot be raised to a fractional power
2019-05-06 11:50:44.618 CRITICAL Plugin.pluginErrorHandler !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
2019-05-06 11:50:46.049 INFO Plugin.csv_refresh_process [matPlotLibCSV] CSV data updated successfully.
2019-05-06 11:50:46.390 WARNING Plugin.processLogQueue [mdailyWeather] Error setting axis limits for Y1. Will rely on Matplotlib to determine limits.
2019-05-06 11:50:46.390 WARNING Plugin.processLogQueue [mdailyWeather] chart updated with errors. See plugin log for more information.
2019-05-06 11:50:46.904 CRITICAL Plugin.pluginErrorHandler !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! TRACEBACK !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
2019-05-06 11:50:46.905 CRITICAL Plugin.pluginErrorHandler !!! Traceback (most recent call last):
2019-05-06 11:50:46.905 CRITICAL Plugin.pluginErrorHandler !!! File "plugin.py", line 4458, in format_axis_y1_min_max
2019-05-06 11:50:46.905 CRITICAL Plugin.pluginErrorHandler !!! y_axis_min = y_min * (1 - (1 / y_min ** 1.25))
2019-05-06 11:50:46.906 CRITICAL Plugin.pluginErrorHandler !!! ValueError: negative number cannot be raised to a fractional power
2019-05-06 11:50:46.907 CRITICAL Plugin.pluginErrorHandler !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
2019-05-06 11:50:47.866 WARNING Plugin.processLogQueue [pool temp trends] Error setting axis limits for Y1. Will rely on Matplotlib to determine limits.
2019-05-06 11:50:47.867 WARNING Plugin.processLogQueue [pool temp trends] chart updated with errors. See plugin log for more information.
2019-05-06 11:50:48.607 INFO Plugin.processLogQueue [weatherAlert] chart updated successfully.
2019-05-06 11:50:48.610 INFO Plugin.refresh_the_charts_now ==================== Redraw Charts Now Menu Action Complete ====================
2019-05-06 11:51:17.061 INFO Plugin.csv_refresh_process [matPlotLibCSV] CSV data updated successfully.

That looks like a bug. What do you have as the setting for y1 axis minimum in the device configuration dialog for the mdailyWeather device and the pool temp trends device?

If you're so inclined, I think this change should keep the error from happening.

Code: Select all

y_axis_min = y_min * (1 - (1 / abs(y_min) ** 1.25))

In this context, y_min is the minimum of the data array for the plotted element so I think it's likely that there's a negative value in there somewhere. Regardless, by using the absolute value of the number in question, the result is the same from a charting perspective, so this small change should fix things.