label

Author: emmanuelle

doc/python/imshow.md

@@ -112,15 +112,16 @@ fig.show()
 
 ### Display an xarray image with px.imshow
 
-[xarrays](http://xarray.pydata.org/en/stable/) are labeled arrays (with labeled axes and coordinates). If you pass an xarray image to `px.imshow`, its axes labels and coordinates will be used for axis titles. If you don't want this behavior, you can pass `img.values` which is a NumPy array if `img` is an xarray. Alternatively, you can override axis titles hover labels and colorbar title using the `labels` attribute, as below.
+[xarrays](http://xarray.pydata.org/en/stable/) are labeled arrays (with labeled axes and coordinates). If you pass an xarray image to `px.imshow`, its axes labels and coordinates will be used for axis titles. If you don't want this behavior, you can pass `img.values` which is a NumPy array if `img` is an xarray. Alternatively, you can override axis titles hover labels and colorbar title using the `labels` attribute, as in the next example.
 
 ```python
 import plotly.express as px
 import xarray as xr
 # Load xarray from dataset included in the xarray tutorial
 airtemps = xr.tutorial.open_dataset('air_temperature').air.sel(lon=250.0)
 fig = px.imshow(airtemps.T, color_continuous_scale='RdBu_r', origin='lower',
-                labels={'colorbar':airtemps.attrs['var_desc']})
+                #labels={'colorbar':airtemps.attrs['var_desc']}
+               )
 fig.show()
 ```
 

packages/python/plotly/plotly/express/_imshow.py

@@ -182,7 +182,7 @@ def imshow(
             img_is_xarray = True
             if aspect is None:
                 aspect = "auto"
-            z_name = img.attrs["long_name"] if "long_name" in img.attrs else ""
+            z_name = xarray.plot.utils.label_from_attrs(img).replace("\n", "<br>")
             colorbar_title = z_name
 
     if labels is not None: