Welcome to PyEt Discussions!

[raoulcollenteur]

👋 Welcome!

We’re using Discussions as a place to connect with other members of our community. We hope that you:

• Ask questions you’re wondering about.
• Share ideas.
• Engage with other community members.
• Welcome others and are open-minded. Remember that this is a community we
  build together 💪.

To get started, comment below with an introduction of yourself and tell us about what you do with this community.

[arjun231193]

I am always getting an error while calculating PET. I am new to coding and is not getting the error message correctly. Attached below is a snip. Please help.

[mvremec]

Dear Arjun!
Thank you for trying out pyet!
The error message you are getting is because the input for the Hargreaves function should
be a pandas time series, with a datetimeindex.
A pandas time series is required because the function needs to compute extraterrestrial radiation
using the day of the year, which can is obtained from the pandas datetimeindex.

Hope this helps!
Best,
Matevz

[arjun231193]

Dear Concern Thank you so much for the information. What if I want to calculate it for multiple stations at a time? I am working on a gridded data set with each grid having its own rainfall, tmax and tmin series. I have hundreds of grids to work with. Can you please suggest to me a better way to use this package in that case? Thanks in advance. Regards *Arjun Kaushik* Research Associate (Department Of Hydrology) Indian Institute Of Technology Roorkee Roorkee (Uttrakhand)- 247667 Mob No:- +919758212761, +4915738623359

…

On Fri, Jul 30, 2021 at 1:18 PM MatevzVremec ***@***.***> wrote: Dear Arjun! Thank you for trying out pyet! The error message you are getting is because the input for the Hargreaves function should be a pandas time series, with a datetimeindex. A pandas time series is required because the function needs to compute extraterrestrial radiation using the day of the year, which can is obtained from the pandas datetimeindex. Hope this helps! Best, Matevz — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#3 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AU3HJXUECLDUAX6I3P52WGTT2JKLFANCNFSM4UTCKSSA> .

[mvremec]

Dear Arjun,

at this point, you could loop through the gridded data set and use the needed
pyet functions for the estimation of evaporation.
For now, it is not yet possible to directly use gridded data sets with pyet (ndarray, xarray,...).
We will be working on implementing gridded data sets after the summer months.

Best,
Matevž

[arjun231193]

Dear Matevz Thank you so much for the information. Regards *Arjun Kaushik* Research Associate (Department Of Hydrology) Indian Institute Of Technology Roorkee Roorkee (Uttrakhand)- 247667 Mob No:- +919758212761, +4915738623359

…

On Sun, Aug 1, 2021 at 1:40 PM MatevzVremec ***@***.***> wrote: Dear Arjun, at this point, you could loop through the gridded data set and use the needed pyet functions for the estimation of evaporation. For now, it is not yet possible to directly use gridded data sets with pyet (ndarray, xarray,...). We will be working on implementing gridded data sets after the summer months. Best, Matevž — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#3 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AU3HJXS3A6GCPSIKEQTQBMDT2T6PLANCNFSM4UTCKSSA> .