Questions tagged [transparency]

The ability to make a GIS layer transparent. That is, the ability to adjust the opacity or transparency of a layer to allow information below the layer to be visible.

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45 views

How to I mask out the black from a GeoTIFF

New to Google Earth Engine and I'm wondering why my GeoTIFF's come convert the alpha/transparency of the image to black. I have these weird black outlines from my TIFF files. See Screen shot. This ...
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0answers
14 views

Automatically setting standard Raster style when loading raster sets in QGIS?

For my project I work with a lot of raster data sets and when loading the data into QGIS they render with a white background which I would like to see transparent (no-data). I also worked before with ...
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28 views

Default transparency with GeoServer layer groups with overlapping raster layers

I have deployed two pan-sharpened raster from Pleiades imagery covering different areas with an overlap. Individually they are opaque (see here and there) but when inside a layer group (with default ...
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17 views

OpenLayers6 TileArcGISRest LAYERS param doesn't allow to modify and transparency of the features

I am trying to modify the transparency of the features ans I don't have a clue about how to do it. The site https://openlayers.org/en/latest/apidoc/module-ol_source_TileArcGISRest.html refers to ...
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30 views

QGIS - problem with transparency

After making transparency of an orthophoto, I can see thin black square lines in the pdf of a layout? Anyone know if you can fix it?
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1answer
38 views

Setting proper transparency for MultiLine? [closed]

How can you avoid faulty transparency with overlapping line segments points in styling? I have one layer consisting of multilines. I use QGIS 3.0+.
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23 views

Display overlapping transparent WMS continuously

I am working with WMS, which cover different regions and overlap at the borders of these regions (see attached image). Since the - in this case DOP - is slightly transparent in order to not to ...
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0answers
23 views

Using QGIS Webmap with Mapbox

Im trying to produce a contour map using QGIS and exporting using Mapbox. The map is rotated 90 degrees in QGIS and it returns to its normal orientation if I use Leaflet. Unfortunately, using the ...
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1answer
15 views

Incorrect tiles from a shapefile are generated by mapnik

I used mapnik_node_tile_server to generate tiles from a shapefile created by gdal_contour. The tile generation function is: function fetchTile(layer, z, x, y, callback) { var map = new mapnik.Map(...
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1answer
60 views

pyqgis: change transparency for cells with value 0

I have a Raster file in which some cells have the value 0 and I would like to use pyqgis make them 100% transparent. I guess I have to use the QgsRasterTransparency class but I have no idea how. I ...
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102 views

GDAL virtual dataset with transparency

I'm trying to create image pyramid of multiple smaller images for GeoServer use. I have done this by first creating virtual dataset with gdalbuildvrt and then with gdal_retile.py. The problem I'm ...
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1answer
72 views

QGIS 3.4 set transparency only for some layers below

I‘m working on a geomorphological map of a river and its sourroundings. As a base I have a topographic map and a DEM for the pre-mapping. The topographic map is not accurate enough in the river gulley,...
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0answers
128 views

Displaying rendered layers in 3D Maps in QGIS 3.8.x with variable transparency/opacity

I am looking at using QGIS to help facilitate conversations/do some thinking in 3D. I have tried both QGis2threejs and the native 3D Map available in QGIS 3.x and both have their strengths. The ...
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1answer
38 views

ArcScene transparency per feature

I am working with some data that needs to be visualized in different transparencies levels. I know how to do it in ArcMap: Symobology --> Advanced --> Transparency. Now I am working a 3D project and I ...
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1answer
86 views

Exporting Transparent Background from QGIS?

I have QGIS version 3.4.3 which does not have print composer. I have a series of lines/tracks/boundaries, etc that are in a layer. I am trying to export that layer with a transparent background for ...
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1answer
485 views

Making heat map transparent in QGIS?

I am still new to QGIS. I have seen several tutorials but they seem to be concerned with earlier versions. The problem I have is that my heat map obscured any map beneath. I can see why this is, the ...
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1answer
370 views

GeoServer polygon transparency (SLD style file)

I am trying to add transparency to a set of polygons (city bounds) within a .sld style file for OSM. Please see below: As you can see the city bounds are overlapping Montana State University. My ...
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57 views

CentOS 7, Mapnik, and Tilestache: Seems like image assets are ignored by Mapnik's point/pattern symbolizers

[Update 6.6.2019] Ok...new detail. I checked a different Apache error log and discovered that it's littered with these errors, generically corresponding to.. failed to allocate png_ptr Actual ...
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1answer
86 views

QGIS transparency as 4th input layer

I have a file that contains four rows. The first row indicates the longitude, the second row indicates the latitude, the third row indicates the colour of a specific longitude and latitude and the ...
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1answer
173 views

QGIS geo referencing - black background transparency

I georeferenced a raster file and ended up with a black background (exact 000000) The raster file contains a lot of black, so setting black to be a transparent color is not a good solution since I ...
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0answers
52 views

Setting transparent to color for raster layer using ArcMap?

I'm working on a map where I'm overlaying a topographic map on a hillshade map (from ALS data). With the right levels of transparency, those maps tend to be the best base for all kinds of stuff. ...
1
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1answer
69 views

How to set layer transparency QGIS C++ API 2.14?

I want to set transparency for already loaded layer by taking it from canvas QgsVectorLayer *myLayer = mpMapcanvas.layer(0); myLayer.setLayerTransparency(50); myLayer.triggerRepaint(); but get an ...
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2answers
152 views

How to convert a .tif file in which transparency is implicit into tiles with transparency?

Reproducible example with QGIS: Download this file: https://github.com/npct/pct-lsoa-vis/releases/download/0.0.1/dutch_slc-10m-merge2-test.tif Open it in QGIS, open the Layer Properties Window, and ...
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1answer
214 views

Make color transparent

I've downloaded some maps from copernicus, e.g. this map: http://marine.copernicus.eu/services-portfolio/access-to-products/?option=com_csw&view=details&product_id=...
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2answers
55 views

Borders appear when reducing the global opacity of multiple raster images in QGIS 3.2.3

I want to reduce the opacity of multiple raster images and when I use the global opacity slider to do so, black borders appear between my images. I would want to eliminate these borders.
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1answer
2k views

Does JPEG 2000 (JP2) support transparency when created?

I haven't been able to find any resources that can provide if in JPEG 2000 (JP2) transparency can be "built-in".
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2answers
949 views

Adjusting Transparency of Labels on ArcMap?

I am pretty new to GIS, and I am trying to figure out how to adjust the transparency of my labels. I know you have to convert the labels to annotations, but I can't seem to do that. I right click ...
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0answers
618 views

Google Earth transparent weather KML file overlay

I am unable to make any of the weather overlays from the website below transparent/opaque once they are loaded into Google Earth. I have attempted to modify the KML file directly by using the ...
2
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1answer
495 views

QGIS: Is it possible to merge two stacked raster layers keeping color rendering and transparency?

Extremely new to QGIS and was hoping to merge 2 layers and maintain an "overlay" keeping layer transparency and color rendering? I seem to loose the top layers layer properties when merging and it ...
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0answers
100 views

Problem with overlapping transparency

I am making an Android app that has bathymetric lake data on a google map. I am new to GIS work. I get this info from the state of nebraska as an already formatted kml file. In the file they simply ...
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1answer
679 views

Setting multiple colors transparent in raster map in ArcMap?

I have an aerial scene in jpeg2000 Format in which I would like the black and white areas to be transparent: In QGIS I can set transparent pixels in the layer properties by simply adding colors ...
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0answers
97 views

Combine two raster maps with transparency

I have two maps in geotiff format for exactly the same area with exactly the same geoinformation. The first one is a real land map, the second one is a satellite picture with clouds (rgba where alpha ...
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0answers
56 views

Trying to deal with pure whites, and transparency of orthomosaic in MapInfo

I'm hoping to deal with this using the raster calculator in QGIS. But, here's my issue (and I'm a pretty novice GIS user); when you bring a raster image into MI, it turns all the null ("no data") ...
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2answers
10k views

Setting layer transparency in QGIS 3?

I just switched from QGIS 2.18 to version 3.0.3. In the earlier version, setting layer transparency was easily done with the "transparency" slider from the Layer properties->style tab. See image below:...
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1answer
77 views

Setting baselayer transparency in QGIS? [closed]

In arcgis we can set baselayer transparency according to use how to do same in qgis
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166 views

Is a TIFF with a 1-byte/px band and RGBA(?) palette and a 1-byte/px Alpha band valid?

I have a process (see how to preserve color-interpretation when merging TIFFs and adding alpha band) which produces a TIFFs (download example image1 17.6 MB) with the following gdalinfo output: ...
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1answer
239 views

Making a transparent globe in ArcGIS Pro

In ArcGIS Pro (2.1), I'm attempting to create a 3D scene in which the underlying basemap is transparent such that I can see through the oceans. I'm trying to get an effect similar to this. Or this: ...
2
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1answer
613 views

Understanding raster custom transparency options (making null data 100% transparent) in QGIS?

I have a raster with a large null area (see the solid black area in the image below). The "Band 1" value throughout this null area is -3.402823e+38. I'm trying to make sense of the result of my ...
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1answer
264 views

How to make black areas tranparent in GeoWebCache when using Geoserver to cache multi band imagery?

I am using Geoserver to cache 4 band (RGB,Alpha) satellite imagery. The native projection of the imagery is NAD83 and I want them in WGS84, when I do the reprojection,using Arcmap, depending on the ...
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1answer
310 views

Setting transparency for all layers in a data frame in ArcMap using ArcPy?

Using ArcMap 10.6, I've tried the following code from a previous post and get an error or it executes but does nothing. Here is the code and error I receive: Code mxd = arcpy.mapping.MapDocument ("...
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0answers
124 views

How to use FeatureLayer's opacity settings?

I'm pretty new to GIS development and I'm trying to load a FeatureLayer that has opacity set (layer is outlined areas that are color-filled and translucent). However, when the layer is displayed in my ...
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0answers
66 views

Making darkness/intensity of overlapping buffers additive? [closed]

I don't know much about GIS, but I want to create some maps that show a particular thing. Specifically, I have a shapefile with several hundred points and I want to create a standard sized buffer ...
1
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1answer
128 views

Inconsistent export of transparent layers

I have a map and an inset map. The content of the inset map's data frame is a direct copy and paste of the content of the main map. Both layers have (in order from bottom to top) a base map layer, a ...
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0answers
320 views

Imagemosaic no-data pixels problem transparency [closed]

I'm trying to display imagemosaic where image are irregular and near each other. Imagemosaic are displayed with a SLD Images overlap and no transparency is applied When publish imagemosaic, I set ...
2
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0answers
373 views

Transparency not working right in GeoServer layer group

I have two image mosaic layers of geotiffs. One contains aerial photos, the other contains rasterized vector data, meant as an overlay. Creating a layer group of these two produces an unpleasant ...
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0answers
1k views

Adding alpha band to a TIFF image drastically increases its filesize? [duplicate]

I'm using gdalwarp -dstalpha src.tif dst.tif to add alpha channel to an 8-bit unsigned image with 3 bands. The initial size of the image is 300 mb, but adding an alpha band increases it to 1980 mb, ...
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3answers
748 views

Geotiffs on Geoserver - Alpha?

I'm having a hard time dealing with geotiff images on a geoserver: I can't seem to get rid of the black 'no data' background around my geotiff image (a map area with a transparent background). ...
3
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2answers
728 views

Can transparency on symbols be set within symbology, or only on the whole layer, in ArcGIS Pro?

I can see how to vary transparency of a whole layer, and also how to vary transparency by attribute. Assuming that I have set my layer symbology to use Unique Values (e.g., different point colors ...
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1answer
84 views

Transparency in stacked imagemosaics coverages

I'm using geoserver to stack several raster images that have different ELEVATION parameter (each ELEVATION "number" is a different layer so to speak). This raster images are 16-bit one channel ...
1
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1answer
463 views

Set transparent raster values with Python

I have loaded a few raster layers in QGIS 2.18. I select a few of them. Next, I run the script: The first option #Change properties selected layers selectedLayers = iface.legendInterface()....