Hey Mike - nice video but I've noticed that in all the Model Builder examples the layers are already displayed in the QGIS project - is there any way that model builder can open files and add the features to the project prior to processing.
Hello great video. I have a question if you create model that adds a column then how can you save the output to the existing layer you set as input. Just trying to avoid save to temporary o new layer.
Hi Sir, I have a model and export to the python script, but the output produced from the exported script is referring to dictionary algorithm processing output name, I want the output to come as i defined in the model, any help.
Hey Mike! I think there's an issue with your impact_ha calculation. You've used the formula "area_ha" - ($Area/10000) - but for features which have had their geometry totally removed (e.g. are completely covered by the linear layer), $Area will return NULL. So the impact_ha in this case becomes NULL, when it should be the same as "area_ha". I think the correct formula should be "area_ha" - coalesce($area, 0 )/ 10000.
You are correct of course. I was trying to keep things simple and focus on the GM without overwhelming students with details. But I do actually have a lecture in the course on dealing with null values in QGIS. Thanks for all your good work on QGIS 3!!!
Thank you for making videos that explain what to do instead of just playing music.
Thank you Mike! That was a good introduction to the graphical modeler ;)
Hey Mike - nice video but I've noticed that in all the Model Builder examples the layers are already displayed in the QGIS project - is there any way that model builder can open files and add the features to the project prior to processing.
Hello great video. I have a question if you create model that adds a column then how can you save the output to the existing layer you set as input. Just trying to avoid save to temporary o new layer.
Hi Sir, I have a model and export to the python script, but the output produced from the exported script is referring to dictionary algorithm processing output name, I want the output to come as i defined in the model, any help.
Excellent
Very helpful Mike, thank you very much
Is it possible to use Categorized or Graduated Renderer in Graphical Modeler?
Hi Mike, how can I stipulate distance in meters/km for a buffer as part of the model. By the way, a very good presentation.
Thanks man!
Hey Mike! I think there's an issue with your impact_ha calculation. You've used the formula "area_ha" - ($Area/10000) - but for features which have had their geometry totally removed (e.g. are completely covered by the linear layer), $Area will return NULL. So the impact_ha in this case becomes NULL, when it should be the same as "area_ha". I think the correct formula should be "area_ha" - coalesce($area, 0 )/ 10000.
You are correct of course. I was trying to keep things simple and focus on the GM without overwhelming students with details. But I do actually have a lecture in the course on dealing with null values in QGIS. Thanks for all your good work on QGIS 3!!!