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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52 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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20 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
47 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
41 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
33 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. ...
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1answer
47 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
100 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
83 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
23 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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143 views

Transparent color settings in ArcMap?

I would like to know are there any (relatively) easy options to adjust color transparency (alpha value) in ArcMap (any version, any license)? I think that's easy to do in ArcGIS Pro because, as you ...
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1answer
619 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
143 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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340 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 ...
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1answer
274 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
45 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
359 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
73 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
52 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
4k 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
52 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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126 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
178 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: ...
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1answer
321 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
172 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
215 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
92 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
48 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 ...
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1answer
98 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
221 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 ...
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0answers
279 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
861 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
402 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). ...
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2answers
404 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
65 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 ...
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1answer
323 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()....
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1answer
2k views

Create Alpha band in GeoTIFF to make a specific color transparent using GDAL

I have a simple RGB GeoTIFF with a white background and want to add a 4th band, the alpha, so that if R+G+B=255*3, then ALPHA=0 ; i.e. if all three bands have a value of 255, then make the fourth zero ...
2
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1answer
316 views

Geoserver &transparent=true equivalent with SLD?

I have some polygons (country borders) and using the query parameter "transparent=true" in my request, I can see what is behind the layer, where no border is. That is great! On the other hand, I have ...
4
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1answer
92 views

Is it possible to export styled vector data as tif in QGIS without losing transparency?

I have vector point data which I have styled using svg images, see below with the globe in the background: And without: I want to export the image without the globe as a tif with transparency. The ...
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3answers
681 views

How Does QGIS Read 'nodata' in 3 Band Raster Data?

I have 3 band GeoTiffs of aerial imagery. The imagery is byte data with values of 0-255 on each band. A 'nodata' value has not been assigned on any band. I am assembling these images using a VRT, ...
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1answer
390 views

Removing black region in published ECW file in GeoServer?

I had published an ECW file in geoserver 2.11.2 with SLD generated from QGIS. After publishing the layer i could see some black region in layers preview with the SLD generated from QGIS as below. This ...
6
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1answer
324 views

Print Composer with semi-transparent raster but full opacity in legend

I am trying to make a map with a semi-transparent (60%) raster layer overlying an areal photo (raster) base map. This works fine and looks good but when I add a legend to display the values of the ...
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1answer
541 views

Exporting map with transparent background to png or jpg? [duplicate]

Is there any possible way to export a map from Arcmap 10.5 without the white background? I need to insert the map in a dashboard with blue background and i only need the outline of the layer not the ...
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1answer
59 views

Want L.OpacityControls to activate after selecting an overlayLayer

Edited to show working code. Although not working 100% and it involves some ugly workarounds which I assume are fixable. Original problem: I'm using L.control.layers to display a selection of layers. ...
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1answer
377 views

How to make Openstreet Map transparent now;

I have a detailed DTM of my region and i want to overlay Openstreet Map with transparency. Is this possible and how; I work with Openlayer3
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0answers
84 views

Setting transparency of feature class in ModelBuilder in ArcMap?

I've made a model which yields an output feature class using ModelBuilder in ArcMap 10.4 I can set the symbology for the output layer by specifying a layer file. Is there any way I can set the ...
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1answer
3k views

QGIS Raster Layer - Black rectangle appears as background

I have looked at solutions to what seem to be somewhat similar problems but they don't seem to solve my problem. A georeferenced raster layer loads into the correct location in relation to other ...
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1answer
1k views

Setting transparency for layer in ArcPy?

I have a blank map. And I have a shapefile. I would like to add the shapefile to the map document, change its colour (which I figured out using @AlexTereshenkov's answer to Adding a layer with ...
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2answers
1k views

Showing transparency slider by default in Layers Panel of QGIS?

Is it possible to have a transparency slider shown by default in the Layer window, i.e. directly after adding a new layer, instead of having it to enable for each layer manually via layer-properties?
5
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1answer
401 views

Set raster layer additional no data value with PyQgis

I need a raster layer transparency configured like this: Since I load the layer with PyQgis, the parameters should be set programmatically. For global transparency and transparency band I found that ...
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0answers
172 views

Adjust polygon fill transparency via ArcGIS cartographic representations?

This is my first experience with ArcGIS representations (10.3.1, advanced). I would like to adjust polygon fill transparency by editing the representation (via Layer Properties>Symbology>...