The set of conventions, rules, or encoding systems that define how geographic features are represented with symbols on a map.

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11
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1answer
2k 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 ...
1
vote
1answer
25 views

How to render the Sea depth level in different color?

I would Like to adapt an old code in c++ using the api qgis 1.6 : const QgsRenderer* lrenderer = pLayer->renderer(); if( lrenderer == NULL ) lrenderer = new QgsSingleSymbolRenderer( ...
0
votes
2answers
20 views

Importing CAD polyline symbology into same polyline but converted to feature class?

I'm working with a CAD drawing (DWG), and I've exported the polyline layer into a file geodatabase. When I add the exported polyline layer to ArcMap, and try to import the symbology from the original ...
1
vote
1answer
17 views

Information about the setDataDefinedProperty

In the QGis C++ API v1.6 there is a function called setlowerValue to set a value for a specific Symbol In my application i use QGis C++ API 2.8.2, i try to understand how the function ...
2
votes
1answer
494 views

Preventing polygon symbology from rotating with data frame when switching between map sheets in map series?

I am using ArcGis 9.3, Windows XP and want to know if it's possible to have symbology in my polygons not rotate with data frame when I switch between mapsheets in my map series? I do NOT have ...
0
votes
0answers
19 views

Applying symbology to layers and exporting to JPEG using ArcPy? [on hold]

This is my first stab at Python/ArcPy! I have numerous point shapefiles that I am trying to apply a specific symbology to and create jpeg files of the same map for each symbolized shapefile. I am ...
1
vote
0answers
5 views

Is there a established color convention for US Federal Agencies?

Do US Federal Agencies have a convention for coloring the lands under the jurisdiction of each? For example, BLM lands are often yellow, USFS light green, NPS blue or dark green, etc. I've found this, ...
0
votes
1answer
212 views

how to apply same color ramp to two line symbols?

Working in 10.2. I want to show two different line feature classes, one with just plain lines and the other with arrow-headed lines. The feature classes have the same categorical field I use to ...
0
votes
0answers
8 views

How do I get the default NLCD symbology back after clipping/projecting?

NLCD landcover rasters downloaded from MRLC have default legends and symbology as shown here: http://www.mrlc.gov/nlcd11_leg.php However, when I extract the raster through a mask, or reproject the ...
1
vote
2answers
48 views

Displaying Buffer overlap in ArcGIS Pro with Intersect

I have created some buffers around some points in ArcGIS Pro, and I am wanting to recognize the area of the buffers that overlap with another buffer within the same layer with a different color. How ...
2
votes
1answer
61 views

How to avoid a QGIS crash when it is appended a symbol layer in a symbol?

When I run the next code at the Python Console of QGIS with a line vector layer: symbol1 = QgsLineSymbolV2.createSimple({'penstyle':'solid', 'color':'black', ...
1
vote
0answers
45 views

Is there any way to mass rename or import field names in Labels in Symbology?

I need to load an .avl that sets the symbology for me, but I also need to give the unique values their name, which is not what the Symbology->Category->Value Field uses, but another field in that ...
0
votes
0answers
18 views

How to apply symbology to raster and keep labels?

I am using Arcgis and I have this layer file with a specific stretched color ramp and custom High and Low labels. Whenever I apply symbology to any raster (I am doing a batch apply symb with arcpy ...
0
votes
0answers
20 views

How do I create Multivariate Symbology (graduated symbol and color classification)

I was wondering if anyone knows how to create multivariate symbology. I have point data with a capacity number and a utilization rate for a type of youth center. I want to show the capacity as a ...
4
votes
1answer
65 views

How to visualize texture along borders of multipart polygon

I came across this map and would like to replicate the textured styling found along the borders. I'm starting with a multipart polygon but my process has perhaps too many steps. I'm using QGIS ...
0
votes
0answers
19 views

Layer File Changing with Feature Class Edits

First post on this forum. I tried searching for an answer but really couldn't find what I needed. Feel free to point me in the right direction if I've missed it. I have several oil wells that I plot ...
0
votes
1answer
23 views

New style and symbol with ArcMap

I a beginner with the ArcGIS platform. I would like to create a new style with ArcMap. I try with the menu : Customize -> Style Manager Style Manager : http://hpics.li/9471c73 My new style appears ...
0
votes
0answers
11 views

how can i change property of a symbol using qgis 2.8 c++ api

i have an application written in QT 4.6, and use the C++ API of QGIS the application will display the data of the s57 file in a MapCanvas i managed to read the file but how can i , for a specific ...
0
votes
1answer
480 views

Add Point Symbol and Zoom to Address using Geocoder Widget

I'm following the tutorial here and it's not working: https://developers.arcgis.com/javascript/jstutorials/tutorial_geocoder.html Issue: I just want to add a point symbol and zoom in for the address ...
0
votes
1answer
207 views

Mapfile SYMBOLSCALEDENOM and SIZEUNITS (miles) 200: Keep SIZEUNITS while circles change size based on zoom

I've been trying to understand how to keep the SIZEUNITS at 200 while the circles appropriately adjust based on zoom level. Thought I had this working properly but turns out I did not. You can see ...
3
votes
2answers
43 views

QGIS: additional description in legend [duplicate]

In ArcMap there is the possibility to have a symbol, the symbol description or layer name and an additional description in your legend Layer Properties --> Symbology --> Fetaures: Single symbol --> ...
2
votes
1answer
658 views

No file is created when I choose 'Save style …' in layer properties

First of all, I create a layer using the Add Delimited Text Layer plugin. The layer contains longitudinal and latitudinal data and a number that is assigned to each data point. When using a graduated ...
1
vote
2answers
219 views

Mapserver WMS, features clipped and positioned

How can I prevent features being clipped at tile boundaries in an WMS layer as per the picture The arrow and line segments are being clipped when viewed in openlayers as a WMS layer. The map file ...
2
votes
1answer
40 views

Changing Field Name/Apply Symbology from layer using ArcPy?

Using ArcMap 10.1, I want to use the Apply Symbology From Layer tool, however my field names are not the same. I'm having trouble understanding how to change the Field Names in a layer. I tried the ...
2
votes
2answers
2k views

Quickly changing outline color of polygon in ArcGIS Desktop without opening Symbol Selector?

In ArcGIS Desktop 10, I know it's possible to quick change the fill color of a polygon by right-clicking the symbol box of any layer and just pick a simple fill color. Is there a way to change the ...
2
votes
0answers
32 views

Adding text background color using ArcPy?

Is possible to add text background color using python on ArcGIS (ArcMap 10)? I wrote a function that able to change font color of the string but I want to add background color to it as well def ...
2
votes
1answer
144 views

Convert mapinfo styles toward qgis styles

Up to now, I has worked with mapinfo. I have a big vector layer (points) with a complex symbology. For several days, I gave up mainfo for qgis. Is there a way to converting my mapinfo files (.tab) ...
1
vote
1answer
332 views

How do I change graduated color class values with python?

I am trying to use python to adjust my graduated color symbols' class breaks and labels. The layer is a query layer tied to an SQL DB and I want to be able to execute my python (after the database has ...
2
votes
0answers
39 views

How to change the symbology of selected features in QGIS

In QGIS selected features are normally highlighted in a different color to draw user’s attention on the selection. The default color can be changed programmatically. As a nice to have my standalone ...
1
vote
1answer
23 views

symbology with 2 fields - one for the color and another for the shape?

for example, i have two fields: 1 - a, b, c 2 - X, Y, Z and i want to do like this: a - square, b - circle, c - point X - blue, Y - red, Z - pink and when i have a and Y - it whould be red square.
1
vote
1answer
36 views

Styling map and generating tiles for Mapnik and/or GeoServer?

I have almost 5 shapefile layers(contains point,line,polygon), now I want to style different layers, for example, different layers, different attributes of the same layer will rendered with different ...
2
votes
1answer
43 views

Rotation of polygon fill symbol using ArcGIS for Desktop?

In ArcMap (ArcGis 10.1) I'm trying to find a way to fill a polygon with a symbol in different orientations. Is it possible? Example: look at the red semicircles, I would like to do something like ...
1
vote
1answer
79 views

Changing colours in GeoPandas?

I have a very simple map (http://www.nyc.gov/html/dcp/download/bytes/nybb_15b.zip) and I have never before worked with shapefiles in any way. Can someone tell me what I need to do in order to change ...
0
votes
1answer
25 views

How do I get a non-circle marker in a category map on CartoDB?

I have a CartoDB map which has two layers. I want both to display, and I want both to be category maps — there are 3 categories in each which display as three different colors. But I want to ...
1
vote
1answer
57 views

Automatically changing the angle of a symbol in QGIS?

I am working with an iron age cemetery in QGIS. I marked every grave in a point layer with several columns; amongst others, burial rite (inhumation, cremation etc.). I inserted a second column for the ...
2
votes
2answers
49 views

How to Exclude Null or Zero Values from Graduated Colors Classification? ArcGIS 10.3

I have a layer that is classified using graduated colors. I have set it to a manual classification with 7 levels. My 1st value of 0 is not needed anymore. How do I remove the 1st level of ...
1
vote
1answer
195 views

How to shade or add grey overlay to non-selected features in ArcGIS API for JavaScript?

I have an application showing cadastral parcels. When a parcel is clicked, the applications makes zoom to the extent of this feature and prepares a floating pane where it is possible to load some ...
2
votes
1answer
1k views

Saving vector layer with specific symbology using QGIS?

I am creating a polygon feature layer with soil classes in QGIS. 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 ...
0
votes
2answers
87 views

Common class range for different attributes in a same polygon shapefile

I have a polygon shapefile which has population attributes pop90,pop91 and so on for 10 years. They have different minimum and maximum value for each of the years. Now I need to do classification for ...
2
votes
1answer
37 views

Apply Symbology from a Layer

I am trying to update the symbology of a layer with another layer with a python script. I have written a code for this. But I am getting the following error message : ERROR 000732: Input Layer: ...
1
vote
0answers
19 views

Display different symbols in QGIS using Point Displacement renderer

How to display different symbols (not different in size, different in shape and color) on the same point in QGIS 2.8 using Point Displacement renderer? I want my layout with symbols around the ...
0
votes
2answers
49 views

Applying symbology to a layer with python, How to only have symbology in TOC that the sub layer has

i am trying to apply a symbology to multiply layers that i have created from one feature class. The original feature class is used to create several sub layers see layer loop this involves using ...
0
votes
0answers
21 views

OSM data Symbolization

I cannot change "Layer display level" of category in OSM Data. I would like to have "tertiary" roads under the "primary" roads. There is also a problem with displaying second level of line symbol. ...
5
votes
1answer
236 views

How to analyze census data and display on map (shape file) in ArcGIS

I have shapefiles representing a country, states of that country or towns etc... For each shapefile there is associated data with them. The country shapefile has 100 rows and maps to .csv files with ...
2
votes
1answer
46 views

How can I apply a color ramp to a shape file layer in QGIS 2.8?

How can I apply a color ramp to a shape file layer to show something simple like population variance? If this was ArcGIS, I would do it by using the Quantities tab in Symbology but I have been unable ...
0
votes
1answer
28 views

Append triangular symbols along polyline in ArcMap?

I have a polyline that needs to have triangles placed along the inside of the line as shown in the sample picture below. I've searched through ArcMap's symbology set and thought I could just add a ...
0
votes
1answer
54 views

Export to CAD from Arcgis while preserving the symbology

Is there a way or tool that you can export layers (feature classes - points, lines and polygons) from Arcgis desktop 10.1 into a DWG/DXF, while still preserving the symbol (basic symbol - colours and ...
0
votes
1answer
159 views

Copying representation symbology from one ArcSDE version to another?

We are having problems with our representations when copying from an ArcGIS 9.3 database to a 10.0. Representation symbologies with dash patterns (dots, dotted lines etc.) are reset to default ...
3
votes
2answers
751 views

Keeping color of shapefile constant in ArcGIS Desktop?

I am using ArcGIS Desktop 9.3 when I use a color for the shapefile it changes everytime when I close and open ArcMap. How I can constantly keep the color of the shapefile that I work with?
1
vote
0answers
41 views

QGIS symbology to ESRI

Does anybody know how to export the layer symbology from QGIS into a format that can be used by with ESRI products? I have been successful in exporting an XML but it quotes the file type as: !DOCTYPE ...