0
votes
2answers
50 views

How to create a symbol with no fill color in qgis?

Where can I find a simple circle to draw it around a point feature. I can change symbol fill color as well as symbol border color. But I didn't find a way to set fill color to no color.
0
votes
0answers
23 views

The graduated symbology doesn 't take into account the attribute I need in QGIS

I m working on a project on QGIS I have a point shapefile vector that represents my store In the attribute table, i have bunch of data such as size, unit per transaction and most importantly store ...
0
votes
0answers
27 views

How to apply categorized symbols to polygon layer with PyQgis?

I'm fetching a polygon layer from postgres like this: uri = QgsDataSourceURI() uri.setConnection("localhost", "5432", "mydb", "postgres", "xxx") uri.setDataSource("public", "my_table", "geom") lyr = ...
0
votes
2answers
98 views

How to resize symbols in the QGIS Print Composer legend?

I am trying to map a count data type via graduated symbol against a chloropleth and the legend is too big. The circles of the graduated symbols are the actual size of their corresponding values in ...
4
votes
2answers
72 views

How to tell QGIS where to start marker line interval?

I want to tell QGIS where to start with a marker, like: use 3 markers, start at positions 0, 2, 4, and apply an interval of 12 to each marker. However, after searching for hours, I haven't found a ...
0
votes
1answer
40 views

How to avoid Displacement of Marker Symbols with X-Offset

I'm trying to mimick a line symbol style that is comprised of the line and 2 alternating markers. I use an interval placement of 10 units for the 'blocks' (custom svg) and 5 for points, thus every ...
0
votes
2answers
71 views

How can you insert a custom symbol?

How can you use a custom symbol for either dot density or proportional symbol maps in QGIS? Is there a way to import a symbol of your own such as a drawing or image that you can create or download ...
0
votes
0answers
25 views

Is it possible to unique value style a raster in QGIS?

In ArcGIS one can load a raster layer and choose an option to style the raster based on unique values. This is helpful if I have a raster of discrete values that are not evenly distributed. For ...
2
votes
1answer
74 views

Why are my symbols not displayed correctly in the legend and after a PDF-Export?

I work with QGIS 2.0.1. I have two problems with the representation of symbols. The first problem is that after I selected a symbol with the type: font and adjust the size of the symbol with the ...
3
votes
1answer
70 views

How to horizontally align irregularly shaped point symbol to vector layer in QGIS?

Fairly new to QGIS and searching a method to graphically align my point symbols in the direction of the vector. The symbol represents a water valve in an irregular shape in close proximity to a vector ...
2
votes
1answer
84 views

graduated labels in QGIS

I've searched on Google but haven't found an answer. The QGIS Dufour GIS provide an enhanced vector-styling interface but is it also possible to graduate the labels like it is possible for the ...
0
votes
3answers
74 views

How to highlight polygons within another polygon?

I want to symbolize public buildings in OSM data. For Example: There is a polygon and in column "amenity" it has the value "school". But i don't want to highlight this polygon, but the buildings ...
3
votes
1answer
171 views

How to transfer styles from QGIS to ArcGIS?

We have a QGIS project that has symbols for a lot of different lines. Data comes from a geodatabase that is accessible to both QGIS and ArcGIS. We now want to use the symbology of the QGIS project to ...
2
votes
1answer
176 views

Saving vector layer with specific symbology

I am creating a polygon feature layer with soil classes. I need to share this layer with some colleagues and I need the layer to maintain the color ramp I have created. Is there any specific format ...
1
vote
0answers
28 views

QGIS rule-based point style responding to number of co-located objects?

I am mapping the geolocated location information for 5.5k Twitter profiles as point data. Many of them have the same location ie "London, UK" meaning that they return identical coordinates. On the map ...
2
votes
1answer
110 views

How to change the colormap in QGIS 2.01?

I decided to say goodbye to ArcGIS and switch to QGIS which is nice, but it has given me a hard time to handle various problems. Few months ago, I made a map using QGIS 1.8 with a relief background ...
2
votes
2answers
122 views

It is possible to use different fields for symbology and legend labeling in QGIS?

[Edit : working with Quantum GIS version 2.0.1-Dufour] I wonder if it is possible to use some field to set the symbology and some other to label the map. [Edit 1 : I mean labeling the legend in the ...
1
vote
0answers
115 views

Style manager not working to batch style group in QGIS 2.0.1

I am trying to apply batch styling to a group of layers using the style manager by setting the conditions, but the symbology does not seem to be applying. This is considering the multiqml plugin is ...
1
vote
2answers
89 views

QGis Print Composer: layer symbology not displayed

Exactly the same as this problem from way back, only I've had this from 1.8.0 to present (2.1.0 master). Yay, symbols: Boo: no symbols, cue MS Paint: Anyone know why this might be or have the ...
3
votes
2answers
162 views

Wetlands Symbol for QGIS point pattern fill

Is there a marker available anywhere for point pattern fill that resembles the standard wetlands symbol used in USGS topographic and other maps? Any good standard symbol that will be intuitively ...
0
votes
1answer
69 views

How to standardise colour-value graduations across multiple maps

In QGIS I have a vector dataset (imported csv vector + csvt) spanning multiple years, and a shape file shape which is essentially a grid. By joining the csv file with the shape file I can apply a ...
1
vote
0answers
125 views

Sources for German Standardized Symbols in QGIS

German Original: Gibt es für QGIS eine Phytonerweiterung "Planzeichenverordnung"? Zur Bearbeitung von Flächennutzungsplänen und Bebauungsplänen kommt man an den Planzeichen nicht herum. ...
2
votes
1answer
126 views

Which Graduated Symbology to use in QGIS

I am trying to map demographics data for a county in the UK based upon a combination of Census data. I want to compare the the averages for the county alone to the averages of the UK as a whole and ...
1
vote
0answers
64 views

Is it possible to use USGS .shd files in QGIS?

Has anyone successfully used QGIS with US Geological Survey shd files to map geology - specifically to display colors and geological symbols (dip/strike etc) stored in a USGS supplied shd file. ...
3
votes
1answer
248 views

How to add complex Emergency Symbology (TrueType fonts) to QGIS?

In other packages I would simply ensure the TrueType font (+.ttf) was loaded on the operating system and it would be available for use. QGIS seems to rely on making your own. The symbols I wish to ...
1
vote
1answer
156 views

How to create “two-dimensional” color ramps in QGIS?

Is there a way in QGIS to create a "two-dimensional" color ramp for the graduated symbology; i.e. a color ramp that determines a color based on two different attributes? My situation is that I want to ...
0
votes
1answer
49 views

Using an image file as a placemark in qgis

I am making a map of sports clubs in London. I have each club's crest as image files (tiff) and want to make the placemark symbol using these images. I know it's possible to upload images in the SVG ...
8
votes
1answer
1k views

How to create desire lines in QGIS?

How can I show the flow coming from an Origin-Destination matrix as desire lines? I need a result like the one in the picture below. I need to scale them proportionally to its value (coming from a ...
0
votes
1answer
462 views

Issues with datasets when custom SLD loaded into geoserver

I have created my SLD's in QGIS and want to use them in Geoserver. I have imported and validated them without any problems but when I try to view the data using Layer Preview --> OpenLayers-->Go it ...
0
votes
0answers
145 views

Issues with exporting QGIS symbology to SLD when symbology uses zoom levels

I've been working on some QGIS based symbology for export to SLD (Can I view the Geoserver zoom level in QGIS) but in the layers with zoom levels I can not export them to SLD...it crashes qgis. See ...
0
votes
0answers
316 views

Group/Cluster point symbols together in QGIS and export to SLD

I want to group symbols together in QGIS when they are displayed to close together and thus clutter a map. As the user zooms in these should then be separated. The result should be exportable to SLD ...
0
votes
1answer
40 views

QGIS Symbology changes by number value

I've gotten a state file with count outlines joined to an attribute file that shows numbers of items per county. ArcGIS has the ability to set the symbology to grade the results into pre-determined ...
1
vote
1answer
102 views

How to symbolize more than one attribute simultaneously in QGIS?

Each symbol can show different properties such as temperature and pressure, etc. I want to change the symbol color according to one property and size with another one. How can I do it in QGIS? Thanks! ...
0
votes
0answers
155 views

Display colour coded road traffic data in QGIS

I would like to colour code a shape file containing road polylines to represent the heaviest flows of traffic. The shape file contains attribute data linked to each section of road where road traffic ...
3
votes
1answer
114 views

Is it possible to use different symbols instead of colours in one shapefile in QGIS?

I want to show 50 bird species on a map and give each species a different symbol (with a different colour) so they can be visually distinguished in the map. Is this possible?
1
vote
0answers
93 views

How to programmatically change an SVG symbol in the Vector Layer?

I'm trying to change the symbol used in a layer via Python. I've been able to tunnel through a vector layer to the symbol layer, but I don't know how to change the symbol it's using. I'd like to ...
4
votes
3answers
67 views

varying size of symbol depending on number of datasets

i am trying to map archaeological finds with qgis. some of them have the same coordinates since they are from the same site or very close to each other. is it possible to automatically display the ...
1
vote
0answers
70 views

How to randomize colors for large datasets in QGIS new symbology?

Someone has already asked how to randomize colors by class in QGIS new symbology, but the answer there does not work with datasets containing more than 100 unique values since the Random option only ...
0
votes
0answers
67 views

Display raster outlines

I guess mine is a very simple task, however I don't know how to solve it. I m trying to display the outlines of a raster created from a polygon shp. What I would like to come up with is an image where ...
2
votes
2answers
512 views

get value from attribute table and change symbology with QGIS and Python

I'm newbie developing plugins for QGIS using Python, this is the first one and it is very frustrating hehe. Ok, this is the situation, I have a 1 point layer in QGIS. Its attribute table has 4 fields ...
1
vote
1answer
303 views

Changing symbology/color in kml when exported from arcGIS/QGIS [closed]

I have marked some points and used symbology in ArcGIS/QGIS... when I export the file to kml, the color/symbology changes and only single color/symbol remains. Is there any possible way that the ...
1
vote
2answers
108 views

How to acces features attributes when creating renderer?

I'm trying to customize the rendering of a point layer in QGIS using python. Thus I have written a renderer class as explained in the documentation ...
4
votes
1answer
196 views

How change border line to no pen with python console?

From Python console I load a shapefile with qgis.utils.iface.addVectorLayer. How I can remove border lines (change to no pen) in the active layer?
1
vote
1answer
73 views

Scaling location points proportionately

I'm trying to get QGIS (1.8) to scale the point markers for each town in a district proportionately to the size of their population (i.e. bigger population = bigger circle). I can get them to vary by ...
2
votes
1answer
665 views

How to apply a graduated renderer in pyQGIS?

Just trying to run the following code already given in the pyqgis cookbook to create graduated colors symbology (as in example with 2 classes) I define the source info for the shapefile but when I ...
14
votes
3answers
333 views

Is it possible to use symbols instead of colours to visualise raster cell values?

I have a raster image (GeoTIFF) with integer values. I know how to visualise raster values in QGIS using colormaps or similar, but I would like to assign symbols to each colour value instead - just ...
1
vote
0answers
182 views

Can I Rotate SVG symbol counter clockwise in Quantum GIS? (Direction East 0 - counter clockwise) [closed]

I'm working in a road signs project. I need the signs layer symbol to rotate according to the value in the angle field, so they could be represented facing the correct orientation. However, the angle ...
1
vote
2answers
179 views

Display the outline of many polygons

I need help formatting an outline on a layer. The problem is that i have a layer with this attribute table: And the aspect of this layer is like that: What I need is to show an outline not around ...
5
votes
2answers
298 views

Can you print cross-hatch area fills like they appear on screen?

I'm trying to use a cross-hatch symbol on polygons in QGIS. When displayed on screen, they look just fine - both in the map and in the composer. The problem is when they are rendered to an image ...
1
vote
1answer
255 views

Does “size scale field” in QGIS actually work?

I'm having mixed results with the 'size scale field' aka graduated symbols in QGIS. Some forum posts out there say this feature is broken - others can get it to work.