Shifting least negative value to zero

Hello

So i have a graph whose values run below 0. i want to make the least point on this graph start from zero so that the subsequent values change accordingly. say -60 is the least point.. it should be zero on the graph the -20 will be at 40 and so on. please help me out.

Thank you so much

Happy New Year

Answer 1

[KSSV]

Let x be your data.

xnew = x-min(x) ;

Als have a loon on the function rescale.

https://in.mathworks.com/help/matlab/ref/rescale.html

[siri meka]

Hi

Thanks for responding. but i want to make minimum point as zero and retain the data

[KSSV]

[val,idx] = min(x) ;
x(idx) = 0 ; 

[KSSV]

If you are talking about only changing the negative values;

idx = x < 0 ; 
x(idx) = x(idx)-min(x) ;

[siri meka]

Thank You

[Image Analyst]

Or (another way) to clip all negative values at zero

x = max(x, 0);

Now negative values will be set to 0 and positive values will remain unchanged.