Show string values on x-axis in pyqtgraph

Question

I want to display string values for ticks on x-axis in pyqtgraph. Right now I am unable to figure out how to do that.

Ex:

x = [\'a\', \'         


        

Answer 1

I find it easiest to prepare a list of indices and a list of your strings and then zip them together:

ticks = [list(zip(range(5), ('a', 'b', 'c', 'd', 'e')))]

You can get an existing AxisItem of a PlotWidget like so:

pw = pg.PlotWidget()
xax = pw.getAxis('bottom')

And finally set the ticks of the axis like so:

xax.setTicks(ticks)

As far as I can tell, PlotWidgets automatically include 'bottom' and 'left' AxisItems, but you can create and add others if you desire.