The columns of hypso_df from the tool of glacier hypsometry need a sort.

[rylanlee]

If there is a valley between glaciers distribution regions, the column of hypso_df in the example of glacier hypsometry will be out of order, which result in the yaxis of the figure in chaos.

In my opinion, add a step of sorting before the plot :

hypso_df = hypso_df.reindex(sorted(hypso_df.columns, key=int), axis=1)

[fmaussion]

Thanks! Sorry I missed this earlier. Would you like to open a pull-request?

[rylanlee]

OK. Please give me some time to know well about github.

[fmaussion]

I'm a bit confused now. We sort the columns here:

rgitools/rgitools/funcs.py

Line 487 in c5d5042

df = df[np.append(df.columns[:3], sorted(df.columns[3:]))]

Where do you think that this line should be?