Bug report #19701

"cell size" option in TIN interpolation tool is missing

Added by Mario Reyes almost 2 years ago. Updated over 1 year ago.

Status:Closed
Priority:High
Assignee:-
Category:Processing/Core
Affected QGIS version:3.3(master) Regression?:Yes
Operating System: Easy fix?:No
Pull Request or Patch supplied:No Resolution:duplicate
Crashes QGIS or corrupts data:No Copied to github as #:27526

Description

In QGIS 2.18 there is an option to set the cell size for a TIN interpolation. In QGIS 3 the option doesn't exist.


Related issues

Related to QGIS Application - Bug report #20114: [processing] no cell size option for IDW interpolation alg Closed 2018-10-15
Duplicates QGIS Application - Bug report #18556: [Interpolation Algorithm] Missing the option X and Y cell... Closed 2018-03-27

History

#1 Updated by Giovanni Manghi almost 2 years ago

  • Priority changed from Normal to High
  • Tracker changed from Feature request to Bug report
  • Subject changed from Cell size in TIN interpolation tool to "cell size" option in TIN interpolation tool is missing
  • Regression? set to Yes
  • Affected QGIS version set to 3.3(master)
  • Crashes QGIS or corrupts data set to No

I agree, is much more common to need to choose the output resolution as cell size rather than dimensions.
Maybe we are missing something obvious? if not I think is pretty important to add this option (maybe splitting the tool in two)?

#2 Updated by Mario Reyes almost 2 years ago

Giovanni Manghi wrote:

I agree, is much more common to need to choose the output resolution as cell size rather than dimensions.
Maybe we are missing something obvious? if not I think is pretty important to add this option (maybe splitting the tool in two)?

Thanks Giovanni. Splitting the tool in two could be an option, but I think if the option for the cell size is added like in the 2.18 version of the tool it would be ok.

#3 Updated by Giovanni Manghi almost 2 years ago

Thanks Giovanni. Splitting the tool in two could be an option, but I think if the option for the cell size is added like in the 2.18 version of the tool it would be ok.

are you referring to the core c++ plugin? I'm not sure 2.18 had already a Processing equivalent and now I can't check in that version.

#4 Updated by Mario Reyes almost 2 years ago

Giovanni Manghi wrote:

Thanks Giovanni. Splitting the tool in two could be an option, but I think if the option for the cell size is added like in the 2.18 version of the tool it would be ok.

are you referring to the core c++ plugin? I'm not sure 2.18 had already a Processing equivalent and now I can't check in that version.

Yes. You are right, in QGIS 2.18 it was a plugin. It was moved to core in QGIS 3.

#5 Updated by salvatore fiandaca almost 2 years ago

I confirm defining the cell size is much simpler and immediate.

#6 Updated by matteo ghetta almost 2 years ago

Totally agree. But actually the fix could/should be simple. We can think to reuse the same approach of the Kernel Density (old plugin ported in Processing too) where the user can choose the size defining the rows and columns OR cell pixel cell size (X and Y).

#7 Updated by Samuel Oester almost 2 years ago

Giovanni Manghi wrote:

I agree, is much more common to need to choose the output resolution as cell size rather than dimensions.
Maybe we are missing something obvious? if not I think is pretty important to add this option (maybe splitting the tool in two)?

In Processing Modeler there is an option to use expressions in the 'Number of columns' and 'Number of rows' fields.
eg. '(@Concave_hull_OUTPUT_maxx - @Concave_hull_OUTPUT_minx) / 0.1'

It would be very usefull to add/expose this functinoality in the toolbox as well.

#8 Updated by Giovanni Manghi almost 2 years ago

  • Related to Bug report #20114: [processing] no cell size option for IDW interpolation alg added

#9 Updated by Alexander Bruy over 1 year ago

  • Resolution set to duplicate
  • Status changed from Open to Closed

Seems dulicates #18556

#10 Updated by Alexander Bruy over 1 year ago

  • Duplicates Bug report #18556: [Interpolation Algorithm] Missing the option X and Y cellsize added

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