Bug report #3500

fTools: unsufficient field width for Area and Perimeter fields

Added by Enrico Fiore over 10 years ago. Updated over 4 years ago.

Status:Closed
Priority:Low
Assignee:Alexander Bruy
Category:Processing/QGIS
Affected QGIS version: Regression?:
Operating System:All Easy fix?:
Pull Request or Patch supplied: Resolution:fixed
Crashes QGIS or corrupts data: Copied to github as #:13560

Description

Hi,
I try to calculate area with ftools add geometry column. I have noted that in automatic new field “AREA” have this properties type=real lenght=10 > precision=6, this involve an error, some numbers are lost, because the Area number have lenght>10.
Example: if I calculate Piedmont area with Ftools obtain 2539107283
if I calculate the same Area , add new column (type real lenght=20
precision=5) and use calc field ($area) I obtain 25391072834.9971.

Associated revisions

Revision cbbb79f8
Added by Alexander Bruy over 10 years ago

extend default field width in fTools Export/Add Geometry column to fix #3500

git-svn-id: http://svn.osgeo.org/qgis/trunk/[email protected] c8812cc2-4d05-0410-92ff-de0c093fc19c

Revision 3c0f834e
Added by Alexander Bruy over 10 years ago

extend default field width in fTools Export/Add Geometry column to fix #3500

git-svn-id: http://svn.osgeo.org/qgis/[email protected] c8812cc2-4d05-0410-92ff-de0c093fc19c

History

#1 Updated by Giovanni Manghi over 10 years ago

it happens also under linux/trunk

#2 Updated by Alexander Bruy over 10 years ago

  • Status changed from Open to In Progress

#3 Updated by Alexander Bruy over 10 years ago

Well, I extend field width for AREA, PERIMETER, XCOORD and YCOORD in 3c0f834e (SVN r15740).

But I think it is better to allow users select desired field width and precision. Unfortunately now we are in string and feature freeze, so I'll add this after 1.7

#4 Updated by Alexander Bruy over 10 years ago

  • Resolution set to fixed
  • Status changed from In Progress to Closed

#5 Updated by Giovanni Manghi over 4 years ago

The "ftools" category is being removed from the tracker, changing the category of this ticket to "Processing/QGIS" to not leave the category orphaned.

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