adding contour lines to pcolor plot

Hi everyone,
I'm trying to add contour lines at 13 degrees to my pcolor plot, but I get the following error:
Error using contour
Input arguments must be numeric or objects which can be converted to double.
Here's my code:
t1 = datetime(2021, 5, 1)
t2 = datetime(2021, 9, 30)
dateVector = t1:t2
combinedaverages = [dailyaverages; dailyaverages06; dailyaverages07; dailyaverages08; dailyaverages09];
figure
pcolor(dateVector, depth, combinedaverages')
set(gca, 'YDir','reverse')
shading flat
ylim([0 70])
colorbar
hold on
contour(dateVector,depth,combinedaverages',[13 13],'k');
Variables in the code are:
combine averages: 153x33 double
depth: 33x1 single
dateVector: 1x153 datetime

4 个评论

hello
it's good practice to share the data (as mat file) along the code (if you want someone to help you)
all the best
Hi, the data are about 150 netcd files..how do I share it all?
The data are the variables you mentioned in your question. If you save them to a mat file and attach them we can run the code in your question.

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 采纳的回答

hello again
maybe this ?
figure
pcolor(dateVector, depth, combinedaverages')
set(gca, 'YDir','reverse')
shading flat
ylim([0 70])
colorbar
hold on
contour(1:numel(dateVector),depth,combinedaverages','k');

4 个评论

Hi Mathieu, thanks a lot for your response!
How do I apply the code to set contour lines at 10 and 20 m?
hello Giulia
see code modification below
clc
figure
pcolor(dateVector, depth, combinedaverages')
set(gca, 'YDir','reverse')
shading flat
ylim([0 70])
colorbar
hold on
V = [10 20]; % set contour lines at 10 and 20 m
contour(1:numel(dateVector),depth,combinedaverages',V,'k');
but the contour line at 20 m will not show up as your Z data (combinedaverages) range spans from 9.0550 to 17.2330
Great! Thank you so much again for your help!
All the best

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