metry in a script and replace the existing geometry, but just
updating the the existing z would seem most straightforward. Is it
possible ?
Any feedback much appreciated, -Andreas
--
Andreas Plesch
Waltham, MA 02453
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road intersections or bends, or the coastline,
and regeoreference using spline warping.
-Andreas
On Fri, Nov 16, 2018 at 8:36 AM Andreas Plesch
wrote:
> Looking at
>
>
> https://ngmdb.usgs.gov/img4/ht_icons/Browse/CA/CA_Tamalpais_301790_1897_62500.jpg
>
> there is a note in
Looking at
https://ngmdb.usgs.gov/img4/ht_icons/Browse/CA/CA_Tamalpais_301790_1897_62500.jpg
there is a note in the lower right corner:
Polyconic projection. To place on North American datum, move projection
lines 690 ft south and 320 ft west.
https://en.m.wikipedia.org/wiki/American_polyconic_
Looking at the source, 2.99 seems to fix the issue that the multipart to
singlepart vector geometry tool does not preserve Z values for 3d
geometries. 2.18.10 seems to still have this issue, at least 2.18.3 has it.
It turns out that it is straightforward to backport the 2.99 fix to 2.18,
so I thou
hat about testing for the 'standard' wkt form by looking for double
parentheses with '(\\s*(' instead ?
On Wed, Jul 12, 2017 at 10:05 AM, Andreas Plesch wrote:
> Hi, I could narrow down the error to negative coordinates:
>
> This works on the console:
> >>&
ordinates work with parentheses:
>>> QgsGeometry.fromWkt('MULTIPOINTZ((-2 2 4),(3 3 4))').exportToWkt()
u'MultiPointZ ((-2 2 4),(3 3 4))'
If there are no objections, I will file a report on the bug tracker.
-Andreas
On Tue, Jul 11, 2017 at 7:09 PM, Andrea
porting as MULTIPOINTZ seemed the easiest option. Is there
another option ?
Thanks, Andreas
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Andreas Plesch
39 Barbara Rd.
Waltham, MA 02453
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U
setting, and
ProcessingConfig.setSettingValue(settingskey, value) modifies the setting.
This way a warning can be temporarily disabled and then restored.
Seems to work well,
-Andreas
On Sun, Jun 11, 2017 at 6:40 PM, Andreas Plesch
wrote:
> I am using the gdal warp (reproject) processing algori
I am using the gdal warp (reproject) processing algorithm in 2.18.9 with
the 'Set georeferenced extents of output file' option, eg. the -te command
line switch.
I am warping from unprojected to UTM coordinates.
Here is a correctly constructed console call
gdalwarp -ot Float32 -t_srs EPSG:32611 -r
otherwise only uses PyQt4 ? PyQt4 does
not seem to have a QtWidgets module. Is there perhaps an environmental
variable to set ? Anything I can check ?
-Andreas
On Wed, May 31, 2017 at 2:14 PM, Andreas Plesch
wrote:
> Hi Matthias,
>
> sounds like exactly what I need. Unfortunately, QFieldSyn
u can use the QFieldSync plugin which comes with a processing algorithm
> that renders a styled map within a given extent to a raster dataset.
>
> Matthias
>
> On 5/31/17 6:29 PM, Andreas Plesch wrote:
>
> Responding to myself, I found this processing script in the script
> r
necessary to clone the mapcanvas maprendercontext to
preserve current settings ?
The main idea is to use the rasterized, styled vector layer as a
georeferenced image outside of QGis.
-Andreas
On Tue, May 30, 2017 at 2:19 PM, Andreas Plesch
wrote:
> I feel I am missing a basic function somewh
I feel I am missing a basic function somewhere to "burn" (in gdal terms) a
vector layer as styled by QGIS, for example with labels, to a raster layer
(of some resolution).
The Rasterize (vector to raster) function is based on gdal_rasterize and
does not take into account styling as it focuses on p
I have a selection input parameter in a processing script and would like to
use it in a model.
However, as far as I can see there is no way to connect the selection input
parameter to an output parameter of another script.
This is probably because there is no matching 'selected selection' output
b.com/andreasplesch/QGIS-X3D-Processing
to follow progress on this project. Any feedback, or contributions are much
appreciated.
Here is an example DEM export using the existing functionality:
https://rawgit.com/andreasplesch/QGIS-X3D-Processing/master/examples/
output/n35w120nedWGS84_200x200dir.ht
I could not find documentation on the hillshade render type style. While it
is rather self-explanatory, the multidirectional option could benefit from
explanation. I am looking at the source here:
http://qgis.org/api/2.18/qgshillshaderenderer_8cpp_source.html
and it points to
http://pubs.usgs.go
Processing python scripts can have a variety of parameter types including
selection:
http://docs.qgis.org/2.18/en/docs/user_manual/processing/scripts.html
- selection. A dropdown menu that allows the user to select from a
pre-populated list. For example units=selection sq_km;sq_miles;sq_de
Hi Martin,
thanks for sharing. As it happens I submitted a (modest) grant proposal for
X3D Processing based development. I think the approaches are very
complementary and should not distract from each other.
Perhaps there are still opportunities to combine efforts in some way ?
Andreas
Date:
Hi Paolo,
> Date: Sun, 26 Mar 2017 20:22:06 +0200
> From: Paolo Cavallini
>
> Il 26/03/2017 00:27, Andreas Plesch ha scritto:
> > I would like to share a project for 3d visualization of Qgis content by
> ...
> > This effort is similar to QGIS2Threejs but is just st
I would like to share a project for 3d visualization of Qgis content by
utilizing a not very well known ISO standard, the X3D geospatial component
as openly available in the x3dom implementation (http://x3dom.org). As a
first tangible result of this effort, it becomes possible to generate an
intera
I started an experiment to use Processing for exporting to 3d web pages
using x3dom (https://github.com/andreasplesch/QGIS-X3D-Processing) and was
wondering if there is some way to use a color button (
https://qgis.org/api/classQgsColorButton.html ) in a script. I know that
processing script algori
Using qgis 218.4, I am trying to use the processing script tool 'create
script collection plugin'. After putting the created plugin folder into the
user plugins/ folder, the created plugin shows up in the plugin manager.
However, it is listed in the Invalid category and the the plugin
description
decoupled from qgis but still curated depending on how responsively
QGIS-Processing is managed, eg. how PRs are accepted.
-Andreas
On Mar 13, 2017 8:38 AM, "Ari Jolma" wrote:
> 13.03.2017, 13:24, Andreas Plesch kirjoitti:
>
> Hi Ari,
>
> thanks for your providin
What are differences between processing algorithms provided as a processing
script or as processing algorithm provider plugin ?
A plugin can presumably have its own custom GUI but are there are other
differences in available capabilities ?
Andreas
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I am starting to work on a processing script which has a html file as
output. The html file has js scripts which require it to be served from a
web server (httpd). The regular webkit viewer is not quite capable enough
but I can launch the system web browser using the webbrowser python package
from
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