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votes
1answer
42 views

creating a new layer based on colour characteristics

I have 14 polygon layers. I have plotted them as transparent layers, so I can get a final layer with 6 different colours, which represent different categories. I want to create a new layer made by the ...
4
votes
0answers
24 views

IRasterLayer background transparency in C++ with ArcObjects 10.x .NET

I have a georeferenced IRasterLayer which is displaying data with no alpha channel. I am trying to specify a color which should be treated as transparent. In ArcMap it is possible to set a specific ...
3
votes
0answers
101 views

Both-sided transparency in ArcScene for extruded features

I'd like to extrude my polylines and make them transparent, but from both sides. As you can see below, the transparency works only on one side. I think it's something with the side-orientation. I can ...
2
votes
0answers
265 views

How to render a transparent raster layer on top of one or more vector layers with PyQgis?

I been trying to render a map with a 3 vector layers and one raster layer. The idea is that the raster layer should be on top of the other 3 vector layers. The problem is that even when I add the ...
2
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0answers
1k views

Overlaying a mbtiles tile layer produced with tilemill over another layer maintaining transperency

So using leaflet, I'm overlaying my base tile layer as google satellite imagery. I want to overlay another layer (Mbtiles layer) produced with tilemill over this satellite layer. I was successful in ...
1
vote
0answers
128 views

Using WMS layer transparency with Geoserver, Openlayers and Drupal?

I am using OpenLayers in Drupal to display Geoserver WMS data. I can get the layer to overly properly, however the raster layer (png) has a white background I cannot remove. I have created a style in ...
1
vote
0answers
88 views

Transparency on black/white raster after clipping in QGIS?

I'm new to this forum and QGIS. I'ld really appreciate it if you could help me with my problem, since I couldn't find any solution online but people experiencing the same issue. It seems as if this ...
1
vote
0answers
109 views

Gdal_translate and transparent rasters in PDF

I am trying to make an application that creates geospatial pdf's from my website, but I am encountering problems with Gdal_translate and transparency of rasters. The setup that I am working up ...
1
vote
0answers
82 views

How to prevent transparent borders (collars) of a tif wipe out overlapping regions of adjecent tif while using gdalbuildvrt

I have a set of Geotifs that have got transparent borders (collars) of irregular shapes & dimensions around them. First I created a VRT over this set of Geotifs through gdalbuildvrt. Then I ...
1
vote
0answers
41 views

Set Default Transparent Pixels in QGIS?

Is there a way to set QGIS to automatically load in images with no data values of (0,0,0) as transparent instead of black? I've looked through the forums, tried saving a .qml file out, looked through ...
1
vote
0answers
58 views

QGIS 2.01 - raster transparency not working properly

I have loaded a color raster image (aerial orthoimagery) into a QGIS project. The layer is visible but very transparent (in the enclosed image the vector polygons are below the imagery), but when I ...
1
vote
0answers
116 views

How to reduce transparency for Openlayers using Map Composer?

Increasing transparency of Openlayers will increase the contrast of others layers. For sure, it will increase the esthetical aspect of maps.
0
votes
0answers
20 views

Transparent layers won't display correctly, but print OK in ArcMap?

Transparent layers are not displaying correctly in ArcMap 10.2 or in exported maps, but they do print OK. They look like this: The weird thing is - the transparent layers displayed fine a few ...
0
votes
0answers
32 views

GeoExt registerRadio problem

Can someone please help me with this error I have in GeoExt: I've used this code http://geoext.org/tutorials/layertree-tutorial.html / "Layer Nodes with Additional Radio Buttons" But the page is ...
0
votes
0answers
24 views

CartoCSS: raster custom transparency color value?

In QGIS (and probably other GIS tools) you can style a raster layer such that certain pixel color value(s) will be rendered as transparent. In QGIS 2.6, this can be set in Layer Properties -> ...
0
votes
0answers
23 views

What is the cheapest way to make all objects from GraphicsContainer transparent?

I am changing arcobjects 10.1 project with a lot of legacy code. I need to make all objects transparent on the map. This objects (points, different sectors, polygons, etc) are persisted in ...
0
votes
0answers
59 views

How to avoid random transparent pixels in georeferenced grayscale raster images?

I'm in the process of georeferencing some old black and white aerial pictures from 1990 in QGIS 2.4. So far, this is business as usual, no problems. Of course I get the usual black triangles, because ...
0
votes
0answers
81 views

QGIS: “No data” raster value for missing rows conflicts with data?

I’m having a problem with specifying “no data” in a raster dataset in QGIS 1.8.0-Lisboa. QGIS does fine in interpreting pixels I don’t have rows for as “no data” if I set Layer Properties -> ...