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How to add vertical lines into searborn heatmap. I did the following way and no lines showed up. No error though. I am wondering if the lines are covered by heatmap color? any suggestions? Thanks

fig,ax=plt.subplots(1,1,figsize=(30,15))
g=sns.heatmap(df,cmap='coolwarm', robust=robust_colorbarrange,yticklabels=yticklabels,xticklabels=xticklabels,annot=False,   \
                      cbar_kws={'fraction':0.02, "shrink": 1.0,'pad':0.01},vmin=colorbar_min, vmax=colorbar_max, ax=ax) 


for datestr in CycleDates:
    date=datetime.strptime(datestr,'%Y-%m-%d %H:%M')
    ax.axvline(date,color='k',linestyle='-')
warped
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roudan
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    This link may help: https://stackoverflow.com/questions/52334938/seaborn-how-to-add-vertical-lines-to-a-distribution-plot-sns-distplot – tcglezen Mar 22 '21 at 21:17
  • Thanks tcglezen. it didn't work. The x axis is date, I am wondering if it is because the date in axvline is not included in dataframe date column? Thanks – roudan Mar 22 '21 at 22:16
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    You could try `ax.axvline(..., zorder=3)` to make sure they are on top. – JohanC Mar 22 '21 at 23:44
  • Thanks Johan, it didn't worm either. – roudan Mar 23 '21 at 00:01

0 Answers0