About DSM & DTM

[liviyu7]

Hi，

When I'm calculating Tmrt, there are reminders in the log showing problems about DTM & DSM (and I have checked there is no data error, negative values are reasonable in my study area with corresponding local datum). Could you give any suggestions about it? Thank you for your support!

[biglimp]

We recommend you to start by removing your NoData values in your DSM and replace them with 0. Then try again.

[liviyu7]

Thanks, and I tried that just now, finding the output raster values keep the same as before (also changed the tree type from coniferous to deciduous). Is this reasonable?

[biglimp]

Yes, I could be reasonable. Changing tree type only affects if leaves are off during winter. Did you still get the warning messages when removing NoData points? If not, then you should be ok.

[liviyu7]

No more warning messages. Thank you!