[QGIS-trac] [Quantum GIS] #3825: Two decimal places for symbology
in map unit is not suited for lat-long data
Quantum GIS
qgis at qgis.org
Sat May 14 05:58:50 EDT 2011
#3825: Two decimal places for symbology in map unit is not suited for lat-long
data
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Reporter: mayeulk | Owner:
Type: bug | Status: new
Priority: major: does not work as expected | Milestone: Version 1.7.0
Component: Vectors | Version:
Keywords: map unit, size, width, offset, symbology | Platform_version:
Platform: All | Must_fix: No
Status_info: 0 |
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In new symbology, when selecting size, width, offsets etc. in "map unit",
the minimum value is either 0.00 or 0.01, because only 2 decimal places
are allowed.
At 45° North latitude, 0.01 degree=786 meters, which renders symbology
based on map unit useless on lat-long data at most scales.
It is impossible to chose for instance "0.0001" (about 8 meters) to
represent a small road or a track.
The resolution should be at least 5 decimal places to support a minimum of
"0.00001" (80cm), which makes sense for "street maps" (e.g. with "Open
Street-Maps" data in lat-long): sometimes you find a path in very narrow
streets, with buildings less than two meters away from each other.
--
Ticket URL: <http://trac.osgeo.org/qgis/ticket/3825>
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