Closed lilaleu closed 1 year ago
@reyery Have you seen this error before?
Just checked: Same happens when using the default CEA workflow and the helper-functions.
@lilaleu did you usecea workflow --worflow
?
@shizhongming no sorry for the confusion. I used the dashboard and executed all operations manually.
Update: I have now spent some time in finding the cause for the error. So I tried to simulate my szenario with the zone-helper and other default values that come with the CEA standard configuration. Only exception was the weather file (epw taken from PVGIS, attached as csv) from the location of my district. This caused the same error as described above.
So I switched to the standard Zuerich weather, that comes with the CEA installation. This one worked.
Transferring this to my original custom-data szenario brought up a new error: "ValueError: operands could not be broadcast together with shapes (8760,) (8765,) () " but I guess this is a new problem out of many. I'm happy if someone has some advice here... Anyway it seems to be caused by the weather file.
I would like to know what CEA expects from a weather file in order to work correctly. I never got it running with epw files from different sources. The only weather files that are working atm are those from CEA itself. tmy_52.250_10.543_2005_2020(1).csv
@lilaleu
CEA will need the epw weather file to work. Have you tried to find your city's weather file here? https://energyplus.net/weather
I have also used epw weather file for Canada found on their gov websites. All functioned well. Maybe you can find epw weather file from you city/country's gov data platform.
I have tried these before and remember I had trouble with these too... I could try those again for my case. BUT the weather file was epw before (Not allowed to upload on GitHUB, so i posted the csv version). So I don't see why it wouldn't work. Are there any more requirements for the epw file? @shizhongming do you have any idea in case anyone wants to use weather from different sources?
I am trying to use CEA as a demand calculation tool for initial DH planning. In my research I am trying to combine various geodata-sources in order to simplify the initial planning process and achieve more precise estimations than original "conservative" estimation methods with the same amount of time invest. My impression would be that this is what CEA is designed for (besides other applications). But I am experiencing many errors working with the custom made data which makes it to this point impossible to use CEA for my simulations. I would wish for a more detailed documentation about how to match the CEA formatting requirements with Applications like QGIS and ArcGIS. The existing documentation is rather general and focuses more on self drawn geometries than imported and manipulated geometries. I've seen that many have used a combination of QGIS and CEA. So it seems to be convenient once you know about the obstacles. Me using ArcGIS and processed building footprints from a LoD1-Model have a lot of problems implementing my data in CEA. Additionally more hints when errors occur would be very helpful. Please tell me, if you'd like me to contribute my mistakes I have made with data migration, in case you want the "HINT"-catalogue :)
@lilaleu Thank you for your feedback. What you have mentioned will be what we will focus on in the coming months of the year - CEA UX enhancement.
Personally, I always use ArcGIS and I don't encounter many errors. It could be that I am always working on CH or SG cases and I know where the "tricks" are without being aware of knowing them. We want to know your experiences in detail so we can improve the tool for more self-import scenarios.
To help us understand your situation and project, I suggest we have a 1:1 meeting. You can find a time here. ; D https://calendly.com/shi-zhongming/30min?month=2023-10
@lilaleu Also, I forgot to mention that in the upcoming release on 8 Sept. We have enhanced script handling the weather files. Maybe it will help on your case. You can access it now via PR#3364.
For the sake of completeness: I've performed the case with default CEA/OSM data for my district and the energypro-weather for cologne and it worked fine. Still, it would be interesting what's wrong with the PVGIS epw-file.
Anyway thank you for your help! I am looking forward to the new release and might take a look into PR.
@lilaleu
CEA will need the epw weather file to work. Have you tried to find your city's weather file here? https://energyplus.net/weather
I have also used epw weather file for Canada found on their gov websites. All functioned well. Maybe you can find epw weather file from you city/country's gov data platform.
Maybe of interest: Attached you'll find the problematic epw file, taken from PVGIS Bebelshof_tmy_52.244_10.542_2005_2020.zip
My subject is probably better up here in the issue-section:
Discussed in https://github.com/architecture-building-systems/CityEnergyAnalyst/discussions/3367