Overlay contour on colored image

I want to overlay contour on image using imagesc. The y-direction of both the figure is coming opposite to each other. I am unable to flip the Y direction by setting gca.

I am new to Matlab please help.

I have attached my data.m file.

My code:

imagesc(dates,depth,temp)
colormap(jet);
ylim([50 200])
hold on
dep=depth(1:71);
TT=temp(1:71,:)
contour(dates,dep,TT);

[Walter Roberson]

imagesc(dates,depth,flipud(temp))

[Adam Danz]

> I am unable to flip the Y direction by setting gca

What's preventing you from doing that?

[Bjorn Gustavsson]

pcolor(dates,depth,temp),shading flat

[Dolly More]

Hey everyone thanks for replying back. My contour was overlaying all this while, it was having same color as image. i plotted black contour over it and it worked. Thank you so much!

[Adam Danz]

This answer shows how to use two different colormaps for the imagesc and contour plots.

https://www.mathworks.com/matlabcentral/answers/710113-how-do-i-plot-2-images-each-with-a-different-colormap-and-clim-in-a-single-subplot#answer_592283