linearregionitems in log plots are returning unexpected values

[Jeremy Webster]

In the plot attached, the f1 and f2 spin boxes are showing the tuple values of the linearRegionItem.getRegion() call.  They apparently show the power of the the boundries, and not the actual value of the boundary as expected. 

A similar thing happens when adding a linearregionitem to a plotwidget



lri = LinearRegionItem(values=[1,2], orientation='vertical')
myplot.setLogMode(x=True, y=True)
myplot.addItem(lri)

will make a linearregionitem that goes from 10 to 100

[Guillaume William Bres]

I face the same problem all the time because I also work with logarithmically spaced frequency axis

but we can easily work around it by testing whether log(x) is being used or not:

log_state = my_plot.plotItem.ctrl.logXCheck.isChecked()

[x,y] = my_curve.getData() 

if (log_state):

      x = 10**x

   

 

[Jeremy Webster]

yes, and similar for the set methods

perhaps in the next release, this will behave as expected.