change colorbar tick and label sizes in display.plot

[Anna del Moral]

Hello,

I am trying to change the size of the colorbar for a psi cross section using radar.display, and I am having troubles trying to do so. I would appreciate any type of help. I have tried to set it with plt.colorbar and fig.colorbar, and I have error messages.

This is the code:

xsect = pyart.util.cross_section_ppi(radar, [320])
display = pyart.graph.RadarDisplay(xsect)
fig= plt.figure(figsize=(30,30))
ax1 = fig.add_subplot(311)
display.plot('DBZH',0, cmap='pyart_Carbone42', vmin=-5, vmax=65, ax=ax1,colorbar_label= 'DBZH [dBZ]',title=" ")
ax1.set_ylim([0, 14])
ax1.set_xlim([60, 100])
ax1.set_xlabel('', fontsize=24)
ax1.set_ylabel('Distance above radar [km]', fontsize=24)
plt.xticks(fontsize=20)
plt.yticks(fontsize=20)
ax2 = fig.add_subplot(312)
display.plot('VELH',0, cmap='pyart_Carbone42', vmin=-30, vmax=30,ax=ax2,colorbar_label= 'VELH [m/s]',title=" ")
ax2.set_ylim([0, 14])
ax2.set_xlim([60, 100])
ax2.set_xlabel('', fontsize=24)
ax2.set_ylabel('Distance above radar [km]', fontsize=24)
plt.xticks(fontsize=20)
plt.yticks(fontsize=20)
ax3 = fig.add_subplot(313)
display.plot('ZDR', 0,cmap=mymap, vmin=-5, vmax=5,ax=ax3,colorbar_label= 'ZDR [dB]',title=" ")
ax3.set_ylim([0, 14])
ax3.set_xlim([60, 100])
ax3.set_xlabel('Distance from radar [km]', fontsize=24)
ax3.set_ylabel('Distance above radar [km]', fontsize=24)
plt.xticks(fontsize=20)
plt.yticks(fontsize=20)
#plt.colorbar(fig,shrink=1.5)
#plt.tight_layout()
plt.show()

Thanks in advance!

Anna

[sherma...@gmail.com]

Hi Anna,

Can you trying calling colorbar from fig instead of plt and each colorbar define your cax parameter in the colorbar with each ax plot.

Example:
https://stackoverflow.com/questions/23876588/matplotlib-colorbar-in-each-subplot

Then you should be able to adjust etc from there

Cheers,

Zach S.

[Anna del Moral]

Hi Zach, 

I tried calling colorbar from fig and plt, and it did not work.

However, a colleague also in this list helped me to solve the problem (Thanks Ludovico!).

Here is what we need to add:

display.cbs[i].ax.tick_params(labelsize=12)
display.cbs[i].set_label(label='ZDR [dB]',size=15) 

'i'=number of subplots we have.

Anna

[Maxwell Grover]

Hi Anna,

I am glad you were able to figure out a solution - here is another example of adding custom tick labels and label sizes https://arm-development.github.io/sail-xprecip-radar/radar-precip/plot-method-description-figure.html#plot-the-reflectivity-with-the-pluvio-sensor-and-watershed-locations

For future questions, please make sure to check out our question and answer part of Github Discussions (https://github.com/ARM-DOE/pyart/discussions/categories/q-a).

Thanks,

Max

[Anna del Moral Mendez]

Hi Maxwell,

Thanks for pointing out those resources! Those are great.

Anna

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Anna del Moral Méndez, Ph.D.

Postdoctoral Fellow I

Advanced Study Program

National Center for Atmospheric Research

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