Show residual in georeferencer in map units (if possible) - Githubissues

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Show residual in georeferencer in map units (if possible) #12791

Open qgib opened 14 years ago

qgib commented 14 years ago

Author Name: Marco Hugentobler (@mhugent) Original Redmine Issue: 2731

Redmine category:c++_plugins/georeferencer Assignee: mmassing -

The following patch shows the residuals in the gcp table in map units where possible and in pixels else. Because interpretation about the gcp errors is easier with map units, so the patch converts pixels->map units for linear transformation and helmert. For the other transformations, conversion to map units is not so straightforward, therefore they are kept in pixels.

100518_georef.diff (Marco Hugentobler)
100519_georefpatch.diff (Marco Hugentobler)

qgib commented 14 years ago

Author Name: Marco Hugentobler (@mhugent)

Added improved version of the patch. The transform parameters are now shown in the status bar, fixed update of georef transformation when enabling/disabling gcps in the table, fixed pdf report layout

qgib commented 14 years ago

Author Name: mmassing - (mmassing -)

Applied in 4d46f190 (SVN r13553) - thanks, Marco.

I'll leave the ticket open for now, because I'd eventually like to add this functionality for the higher order transform types (linearization via jacobi matrix or numerical approximation of the derivatives), and also a config option to choose the desired units.

I think the latter is useful because reporting residuals in pixel units shows if residuals are in the ballpark of input discretization, whereas map units are useful to better get an estimate of absolute error.

status_id was changed from Open to In Progress

qgib commented 12 years ago

Author Name: Giovanni Manghi (@gioman)

fixed_version_id was changed from Version 1.7.0 to Version 1.7.4

qgib commented 12 years ago

Author Name: Giovanni Manghi (@gioman)

fixed_version_id was changed from Version 1.7.4 to Version 2.0.0

qgib commented 11 years ago

Author Name: Pirmin Kalberer (Pirmin Kalberer)

fixed_version_id was changed from Version 2.0.0 to Future Release - Nice to have

qgib commented 10 years ago

Author Name: Jürgen Fischer (@jef-n)

category_id was changed from C++ Plugins to C++ plugins/Georeferencer

qgib commented 7 years ago

Author Name: Giovanni Manghi (@gioman)

easy_fix was configured as 0
pull_request_patch_supplied was configured as 0

roya0045 commented 4 years ago

Isn't this the case anymore?

pjshelton commented 3 years ago

It still only works for the first order transformations. QGIS3.18.0.

Also need to check the Georeferencer configuration as it seems to be turned off by default.