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biglimp avatar biglimp commented on September 26, 2024

Thanks. You found a bug that has probably been with us for a long time. I will fix. If you need a quick fix, let me know.

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biglimp avatar biglimp commented on September 26, 2024

Fixed. Also fixed so that issues calculating wall area on irregular grid as well as issues when DEM and DSM had different NoData values.

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DimitrisTsi avatar DimitrisTsi commented on September 26, 2024

Hi!
I updated the plugin and i am afraid the issue persists, all outputs are the same regardless of the calculation method.
Here are the inputs and outputs for versions 1.7.12 and 1.7.13.

I also quickly tried to replicate the zd (zero-displacement height) output value of the isotropic calculation, using the zH, pai, fai, zStd values and the math that is present in the RoughnessCalc(Roughnessmethod,zH,fai,pai,zMax,zSdev) function of the RoughnessCalcFunctionV2.py script, and could not get the same result that is given in the IMPGrid_isotropic.txt file using any of the methods. The zd value definitely does not match the Rule of Thumb result (which is the default calculation method if the script does not manage to get input from the user if i am not mistaken) for zd which is zd = 0.7*zH.

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biglimp avatar biglimp commented on September 26, 2024

I cannot replicate your error. Changing from rule of thumbs and e.g. macDonald gives me different numbers for z0 and zd

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DimitrisTsi avatar DimitrisTsi commented on September 26, 2024

sorry @biglimp I messed something up during the update, i downloaded the package files again and it works as supposed to, thanks!

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