How can I remove the nan value (with index code -1) while reading a tiff image in Matlab

How can I remove the blue background (shown in attachment) which is representing nan values with index code -1 while reading a tiff image in Matlab

I am using the following code for reading a tiff image

filename = 'D:\Rainfall\Rainfall.tif';

[A, cmap] = imread(filename);

imshow(A, cmap)

caxis ([0 3500])

Cbar_tick = 0:500:3500;

Cbar_ticklabel = string(Cbar_tick);

cb = colorbar('southoutside', 'Ticks',Cbar_tick, 'TickLabels',Cbar_ticklabel);

cb.Position = [0.25 0.07 0.5 0.018];

cb.FontSize = 8.5;

cb.Color = 'k';

cb.TickLength = 0.019;

cb.TickDirection = 'out';

cb.Label.String = 'Rainfall (mm)';

cb.Label.FontSize = 9;

cb.Label.FontWeight = 'normal';

Answer 1

[Rishik Ramena]

You can try using the read function to read the tiff image. This function takes in a tiff obejct as input, so create a tiff object and pass it as a parameter to this function. Have a look at the examples here.