How do I represent decimal values of a tif using imagesc??

Hi! I have a tif image and I'd like to show it in MATLAB. To each pixel, a decimal index value is assigned. If I open the tif with imagesc, I get just an image where index pixels are round numbers, how can I get decimal values? example. now I can get just

1 1 1 1 1 1 1 1 1

but I'd like to have: 1.02 1.03 0.98 0.98 0.89 1 1.42 1.3 1.6

[Azzi Abdelmalek]

How did you read the image?