Questions tagged [symbology]
The set of conventions, rules, or encoding systems that define how geographic features are represented with symbols on a map.
2,234
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Raster Symbology is using estimated values regardless of settings. QGIS 3.28.2
I am using QGIS to view a DSM and it seems to be using estimates rather than actual values, regardless of what I have toggled for the accuracy setting. Here are the settings that I'm using for my ...
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ArcGIS Pro will not display symbols on map
Using ArcGIS Pro with an imported data file of state plane UTMS. The file imports nicely, but I can not get symbols to display. I have applied simple black circle symbols, but they do not display. ...
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Symbolising point shapefile in QGIS: half blue half red colored point
I have a point shapefile. I have one point which I want in two colors. One half should be blue, the other one red. It should be divided vertically.
I tried the gradient version but it is as it says a ...
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How to increase line width?
I have a script that changes the symbology to unique values, but I can't figure out how to adjust the width?
#isolate the symbology of the selected layer
sym = lyr.symbology #set the symbology as ...
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Create alternatingly colored line segment in QGIS
I have a request to carry out a task which resembles Creating alternatingly colored line from points layer in QGIS.
Is it possible to achieve an alternation of color between sections (several lines) ...
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140
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Creating SVG point symbol depending on content of attribute field in QGIS
I have almost 300 localization of different airports with name by ICAO,
for example my column name is "ICAO" and values are "EPGD-Gdansk", "EPWA-Warsaw" "EPWM-Warsaw&...
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Do custom dashed lines fail when rotated?
Discontinuous lines work fine when they are at right angles (0°, 90°) but as they are drawn at a greater or lesser angle, their defined spacing expands, i.e. they do not maintain the distances I ...
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SLD Inverted Polygon
I have a layer in QGIS that has a symbology as inverted polygon. However, I'm not able to export that in SLD (for showing it in GeoServer with geOrchestra). I have tried to write the code manually (...
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Color Vector Line Using Different Data Layer QGIS
I have a project that has two important data layers. One contains raster data, in this case slope, and another layer that contains a bunch of vector lines. I want the color of the line to reflect the ...
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Import GeoPackage(GPKG) to PostGIS with styles
I've tried to import GPKG file data into PostGIS using ogr2ogr, but can't seem to understand if it is possible to import the style symbology contained within the GPKG aswell.
I've noticed ogr2ogr adds ...
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Calculating Percentage in symbology
I'm trying to calculate a percentage of a filter against a total number and show in symbology so total number 583269 (Plots) formula is "Column A" > -123 (gives a result of 582962) I ...
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Generate wind turbine symbol in GeoServer
I need to make a windmill symbol in GeoServer (similar to the symbol in QGIS symbols). I tried taking the SLD to GeoServer but it doesn't work. So I tried with simple lines and points in GeoServer but ...
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Setting a layer's Raster Image Marker X/Y location based on the X/Y coordinates of the feature's label in QGIS
Using QGIS, I'm trying to make a map with Label Callouts that show both the name of the feature, as well as display an image of the feature. I'd like the position of the image to be based on the ...
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QGIS 3.4.1 How to symbolize based upon characters of a 12-digit HUC code
I'm trying to group and then symbolize polygon shapefiles using HUC 12 codes. Field name is "huc12"; field type is integer. more specifically, I want to be able to group polygons according ...
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Representing polygon features using arrows that represent direction of orientation?
I have a polygon layer that stores results obtained from simulations run on a hydrological modelling software, ICM.
A particular table within the attribute table of this polygon layer has details ...
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Loading multiband raster layer with pseudocolor style (not RGB) using PyQGIS
I am loading a raster file with many bands to my QGIS project.
layer = self.iface.addRasterLayer(raster_file_path, baseName="foo")
By default, QGIS chooses to set its symbology to "...
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Displaying symbol size based on number of records with value in ArcGIS Pro
I am new to working in ArcGIS Pro.
I have a table of historical sites, each with a county location. I geocoded the table so now I have a point for each county that has at least one historical site. ...
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Parameterizing SVG text rotation in QGIS
In QGIS, I made some custom SVG symbols for a project I’m working on and I’ve had success using parameters to control fill, stroke, and stroke width. However, I have text in the symbols that I would ...
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53
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QGIS categorise shapes on one attribute and format symbology based on different attribute
Using QGIS 3.30.2
I have a polygon shapefile with 20 shapes in it.
Using symbology ---> categorized. I have 20 different shapes categorized based on Attribute A which has 20 variables (so that I ...
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34
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Defining "All other Values" in QGIS
I am trying to use the "Сategorized symbology" in QGIS. I am having a problem because some of the data I need seems to be in the "all other values" category when categorized.
Is ...
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Treating a feature as both a single line (for length) and a multi line (to colour each segment)
I am tracking progress made each day along a path, so that I can show in QGIS each day's progress in a different colour with a label showing the day number and distance covered.
However in this case ...
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ArcGIS Pro - How to use scale-based sizing at scales larger than 1:1000
I'm pretty new to ArcGIS so maybe I'm missing something obvious, but it seems to me that scale-based sizing for symbols is only possible at scales smaller than 1:1000. I can add breaks to the bar at ...
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72
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Accurate splitting value of graduated symbology in QGIS
Everytime I use graduated symbology in QGIS I am in doubt how the intervals precisely are split.
Doing some manual testing with integer attributes I can see that the "real" intervals are ...
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Hiding layer for N seconds in QGIS: animate symbols with custom intervals
This is a follow-up to Making geometry blink in QGIS, for which I couldn't find any answer online.
It is relatively simple, using the Time Manager plugin or the Temporal Controller native tool in QGIS,...
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Diagram Fixed Size with PyQGIS
I try to change the parameters of a diagram using PyQGIS 3 but I can’t find the function in the QgsDiagramSettings class to set it to "Fixed size" (and not "Scale Size) and set a value. ...
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49
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Seeking geological standard symbol for folding
I'm looking for a symbol for a geological map.
And I can't find it. It's a symbol to represent the folding of the geological layers.
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Update symbology when add feature QGIS [duplicate]
I'm working in QGIS and I have a virtual layer with lines geometry and categorized symbology by field "name". When I have a new name category I have to do the classify to get the new name in ...
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72
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Enabling render type for Mapzen Global Terrain in QGIS
I'm trying to change the color ramp on a Mapzen Global Terrain layer and only 'Singleband color data' is available in render type. 'Singleband pseudocolor' is not available. This is occurring in QGIS ...
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36
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Offsetting categorised symbology for features overlapping (only when features are overlapping)
I'm trying to look for a solution to a problem I am having with a polygon layer in QGIS.
I've produced a 'Boundary' layer in QGIS, such boundaries are leveled the lower levels are inside the higher ...
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Generate layer preview icons
QGIS uses small image preview icons for its layers in the legend and layer tree. How can I create these for a given layer as an image object (QIcon or QImage I presume)?
As I am looking for a PyQGIS ...
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NO symbol at the beginning of a symbol line?
Is there a simple way NOT to have a symbol at the beginning of a line?
I need to add symbols on a line each x meters.
Symbology > add symbol > line of symbol works fine, but there is always a ...
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Where can I find common symbology presets for QGIS?
I am looking for a collection of basic, common styles that I can just apply in QGIS.
In ArcGIS, I am used to having a comprehensive set of common symbology options built-in, e.g. different road types, ...
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50
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Labels covering point layer symbols QGIS 3.28
I am encountering a problem with label placement in QGIS 3.28. Specifically, the elevation contour labels in my project are covering the symbols of another point layer, even though I have arranged the ...
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Changing Fontmarker Size Expression in QGIS 3.28 using Python Console
I am currently working on a geology and mineral occurrence map in QGIS 3.28. I have a vector rule-based layer in which mineral deposits are classified with different symbols. Some of these symbols ...
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42
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Symbology to layers not working
I want to apply layer symbology to all TIFF in a group layer but it does not work:
import arcpy
mxd = arcpy.mapping.MapDocument("CURRENT")
df = mxd.activeDataFrame
groupName = "New ...
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How do I dodge overlapping line/polygon layers so that each is visible in QGIS?
I have 3 separate polygon layers that often overlap (image below). How do I change the symbology in QGIS to have them parallel to one another and not overlapping? (as shown in the second image below).
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Polygon outline in QGIS
I want to get a style for the polygon outline in QGIS with a dash or dot line that fits together perfectly, so that the dashes or dots that make up the outline overlap 100%.
Screenshot for ...
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ArcGIS Online can't see legend symbols on mobile
I created a simple web map to show bike infrastructure and points of interest. All features were digitized in ArcGIS Pro, published as hosted feature services, and then added to a web map on ArcGIS ...
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How to export vector layer containing symbology compatible with ArcGIS on PyQGIS
I export vector layer(.shp) with symbology file(.qml) like below code.
The exported files works on QGIS, but on ArcMap (ArcGIS), qml file doesn't work.
How can I extract symbology file on PyQGIS so ...
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QGIS - Link layer symbology based on column linked with another layer
I have 1 polyline layer and 1 polygon layer. They both have a column with the same values.
I want the polyline layer to have the same color of the polygon layer when the values are the same. I didn't ...
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38
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Highlight (power pole) shadows in Bing basemap
I'm creating power pole features using only the Bing basemap in QGIS. Bing seems to be higher res than the Google map. I'm trying to change the symbology of the layer to help highlight the shadows ...
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Advanced QGIS Marker Line symbol controls
With a line geometry layer, I can use a "Marker Line" symbology element to regularly space markers along a line, for example every 20mm, even if there's no line vertexes there. I can also ...
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QGIS: Multifeature layer symbology and layer legend based on two separate attributes?
I'm quite new to QGIS, and I'm battling with something that seems like it should be really easy to do.
I have a polygon layer with hundreds of features, and I want to define the layer's symbology ...
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ArcPy script to apply symbology to layers works in the Python window but not as a saved script for ModelBuilder in ArcGIS Pro
I have some scripting where the goal has been to create data and spatializes them from tables through an FME workbench saved as a data interop tool and saved in a FGDB, which then a script is ran to ...
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49
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QGIS 3. Point Cluster rendering but with categorization?
Is there a way to obtain the same spatial rendering as what QGIS 3 allows with Point Cluster symbology (spatially close points clustered in a unique symbol) but using an attribute based categorization?...
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Changing strokestyle to no for all point layers in group or project
I have 700+ point layers in my project in one group ('Groupname'). All of them have the standard symbology (but different colors). I want to change just the setting of the "stroke style" to &...
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203
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Give one symbol to several points in QGIS
Without editing original data, I want to display a single symbol in the center for points which has identical attributes. I have an area with nine basements. To each basement belong several points. I'...
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Specifying categorical symbology in PyQGIS
I have a vector image that is set with a single symbology. I would like to update the file to categorical symbology based on either 1 or 0.
Based on the documentation: https://docs.qgis.org/3.28/en/...
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Classify symbols in QGIS by percentile
Is there a was to use graduated symbology and have it calculate and classify the data by percentile?
I'd like to group my data in the following percentiles:
0-25 %
25-50 %
50-85 %
85-100 %
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ArcGIS Arcade for WebMap Symbology Issue
I'm working on some custom symbology logic for a WebMap and no matter how I form the Arcade I can't return the appropriate symbol classes, just a block of all features classified as "Other". ...
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