do the model have a default CRS？

[yelvk]

i use the climate data which is in “Krasovsky_1940_Albers” projection，and reproject the mask/dem/... data to the same projection , then the result looks strange 。

do i need to reproject all data into 'WGS1984'? or a random projected coordinate system is also ok?

[NokuzaSezo97]

Hi @yelvk,

Unfortunately, yes. PyAEZ algorithm works with GCS coordinates as major algorithm considers latitudes as the main factor in biomass and yield calculation, not with the projected coordinates. So, all gridded datasets requires to reproject to GCS coordinates with WGS84 datum.

One thing to note is our current version is still valid for yield simulation in the Northern Hemisphere. Southern Hemisphere is yet to be implemented. This is to be covered in the coming new version.

Regards,

Swun Wunna Htet

[yelvk]

thanks for your answer

[maobw12]

嗨，

不幸的是，是的。PyAEZ算法使用GCS坐标，因为主要算法将纬度视为生物量和产量计算的主要因素，而不是投影坐标。因此，所有网格化数据集都需要使用 WGS84 基准面重新投影到 GCS 坐标。

需要注意的一点是，我们目前的版本仍然适用于北半球的产量模拟。南半球尚未实施。这将在即将到来的新版本中介绍。

问候

Swun Wunna Htet（斯温·乌纳·赫特特酒店）

Do you mean that all data should be set to a datum of D_WGS_1984 , and a spatial reference coordinate system of GCS_WGS_1984, rather than a projected coordinate system for the raster? Is it a projected form like Figure 1 or a Figure 2 Figure 3 projected form? Thank you very much for your letter. Best wishes

[NokuzaSezo97]

It's figure 1, @maobw12.

[maobw12]

Thank you very much for your advice.