Spectral signature plot not using multiplicative/additive factor in y-axis

[jgrn307]

Hi there! I've got a Landsat 8 OLI reflectance image that was distributed as a 16-bit integer with a published multiplicative/additive factor. I correctly added this to the SCP band set definition, and when doing the pixel identification tool it properly shows the data scaled between 0 and 1. However, when generating ROIs and plotting them, the y-axis in the plot reverts back to the unscaled 16-bit "raw" DN values. The image was saved as a virtual band set, if that matters. Any ideas? Here are some screenshots:

Multiplicative/additive settings:

Pixel ID tool with floating point values ranging from 0.0 to 1.0:

Spectral signature plot showing the raw DN on the y-axis:

[semiautomaticgit]

Hi @jgrn307 , thank you for reporting this.
I think it is an issue with the management of scaled values, I'll look into it.
In the meantime you can perform the preprocessing to the images in order to apply the scale factors.