Direction of data/axes using heatmap

Hi there,

I am creating a heatmap using the following code and am generally happy with the results

h=heatmap(data_table,'Cent_Deviation','Height','GridVisible','off')

My only issue is that the y axis is 'upside down' for my purposes - it is a measure of height yet the lowest values are at the top of the figure. Any ideas how to create this heatmap with the smallest y axes run from low to high (as with any 'normal' plot)

Thanks in advance

jack

Answer 1

[Naman Chaturvedi]

Hi Jack,

You can use the yvalues property of heatmap and use the inverted array of the y axis values to do what you want.

For example: instead of using

>>h=heatmap(data_table);

use

>>h=heatmap([1 2 3 4 5],[5 4 3 2 1],data_table);

HTH.

[Jack Naumann]

thanks for your response Naman,

Just a bit of clarification though - does the approach you use not assume the data has already been aggregated i.e. the values in the table directly correspond to the colours in the heatmap - while the approach I used whereby the fields to be used in the heatmap are defined and the function aggregates (a count in this case)? So I would have to do the aggregation separately? Does this not remove half the purpose of the function? Or am I missing something?

thanks again