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

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2answers
151 views

MapServer: Symbol color is set in mapfile. Is there a way to change it using javascript (ie not in mapfile)?

I have a mapfile where the symbol color is set to blue. In my html I have a hover event that brings a popup when the user puts their cursor over the symbol. Working as intended. Now on that same ...
0
votes
2answers
398 views

ArcMap - Symbolism Wildcard

This might be one of those slap your forehead so simple questions. In ArcMap, how can I use wildcards to aid with map symbology? For the example below, I have tried adding values such as "Field *" ...
2
votes
1answer
621 views

Importing AUTOCAD .dwg to Arcgis Symbols

My client has some symbol drawn in autocad.. they are saved in .dwg files. How can I import them into ArcGIS symbols? I have FME 2013, I am not sure if that helps.
3
votes
1answer
264 views

Replicate Import Symbology Matching Dialog in ArcObjects?

In Arcmap I can render a layer with same symbolgy applied to different fields by way of re-importing the .lyr file and choosing a Value Field. How can I replicate this functionality in ArcObjects?
2
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0answers
148 views

Road Symbology Issues

I have preparing road symbology using Arcmap 10.1 version. When I was prepared attribute based symbology as a layer shown on symbols were overlapped. I have attached an example image to show the ...
0
votes
1answer
51 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 ...
0
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1answer
557 views

Apply Symbology to a group layer

I currently have around 200 features that all need have the same symbology applied to them. I have used the ApplySymbologyfromlayer_management however this takes much to long to process, at least a ...
1
vote
1answer
247 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
1answer
509 views

Using Unique Values Symbology in ArcPy?

I am using ArcGIS for Desktop 10.1 and Server 10.1 on my machine Windows 7. I am newbie in python & running simple python script for UniqueValuesSymbology it running fine if I use mxd as ...
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0answers
354 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
2answers
104 views

Symbology count in database form

I am working on a file which contains points from different areas of country. I have symbolized points. I want the feature count of respective area in a database form in .dbf file or excel etc. How ...
2
votes
2answers
2k views

How to Add Shapefile with Symbology from Layer File to ArcMap MXD using ArcPy/Python?

Say I have a Shapefile: C:\DATA\points.shp A layer file: C:\SYMBOLOGY\symbology.lyr And a map document: C:\MAPS\map.mxd How can I add points.shp to map.mxd with the properties of symbology.lyr ...
0
votes
1answer
141 views

Need help in Symbology for ArcGIS JS API 3.2/3.3

I am displaying various symbols in my application and initially all are displaying at once (looks like bulky) so how do I set symbol levels in ArcGIS so that according to zoom level symbol size will ...
3
votes
1answer
192 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
1answer
125 views

Basic traffic volume map [duplicate]

I'm trying to map the volume of people traveling from various cities to popular mountain towns in British Columbia. I have a .csv containing the starting point, ending point and number of travelers. ...
1
vote
1answer
999 views

arcpy.mapping Graduated Colors Symbology

I'm trying to figure out how to apply graduated color symbology to a feature class by using arcpy.mapping in ArcMap 10.1. To start, a script runs and a feature class is added to a map document, no ...
5
votes
1answer
561 views

How to ensure different colors for surrounding polygons in ArcGIS?

I can symbolize my polygon in ArcGIS by categories. I tried for every field. But unfortunately in few polygon it showing same color those are just beside of same color polygon. I have to categorized ...
1
vote
0answers
282 views

Model Builder not completely honoring lyr file

I have created a series of map templates for one of our departments that each have an associated model. As part of the model I also created a lyr file for symbology and labeling (the subject parcel ...
2
votes
0answers
223 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 ...
1
vote
1answer
786 views

Where does the Style Manager store the files in and Why does the Style Manager does not show some edit color ramps?

Where are Color Ramp files saved? Every time I make edits, it does not show up on the Style Manager. Does it save it to the hard drive or in the Style Manager? I need more information. Thanks
5
votes
1answer
695 views

Copy and Paste symbology in Raster?

I am trying to figure it out how can I take a preserved color from a raster I already set up before and then apply the colormap to a new raster file? Here are the details of what occurred: Before ...
9
votes
3answers
361 views

What does this style of line on Topographic maps indicate

If I was reading the purpose of this stackexchange site right, I could also ask general map questions. Not necessarily regarding software. Anyways, I was wondering if someone could inform me what ...
5
votes
3answers
214 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
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0answers
36 views

Preventing symbols from different layers from interfering with each other in ArcGIS online

I am tackling a project that contains several new elements for me since I am a high school social studies teacher and not a full-time GIS professional. For this particular project I am trying to show ...
1
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0answers
190 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
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0answers
186 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
1k 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
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1answer
912 views

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

I have marked some points and used symbology in ArcGIS/QGIS but 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
4answers
205 views

Batch visualization of raster (grid) files

I have about 100 raster (grid) files (in the "ascii grid" format) of drought index. All cover the same area of interest but at different times of year. I need to create images from the grids with ...
1
vote
2answers
298 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 ...
1
vote
0answers
32 views

Environmental styles library

i'm looking for environmental symbols, related to berm diagnostic (collapses, subsidences, anthropogenics deposits... Is there any style library available? Thanks in advance, Max.
5
votes
1answer
567 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
0answers
387 views

Can you insert a marker symbol at a specific scale?

I have a map that is consistently used at a 1:500 scale. I want to be able to add structures to the map to view and move them around to get the best fit. The end user is new to GIS and I am trying to ...
1
vote
5answers
7k views

Where can I find base data shapefiles for whole US?

I am looking for the base layers for whole U.S. - roads, hydrological lines etc with flexibilities of changing symbology and labels. TIGER is a good source but it is at county level. I am running on ...
1
vote
1answer
181 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 ...
3
votes
1answer
911 views

Is there a way to turn on labels with ModelBuilder?

I have a model that creates a feature class and adds it to the map. The properties of the feature class reference a layer file for the symbology. However, I can't seem to find a good way to pass the ...
1
vote
0answers
200 views

Overlapping polygon outlines dashed at overlapping locations but solid elsewhere

In ArcMap 10.0, if one smaller polygon fits inside of another and shares a portion of the larger polygon's boundary, and they both are set to display thick outlines on the inside, is there a way to ...
4
votes
5answers
801 views

How do I add a field that determines the feature's transparency in ArcMap?

I have a feature layer that has points. I want these points to be transparent depending on a field that I've created. Here are references to being able to actually do this (I do understand that these ...
6
votes
0answers
113 views

What are common ways of presenting features that share coordinates? [closed]

When I encounter features of the same class, but with identical coordinates I lay them out in a spiral arm formation. I chose to pick the initial radius and angle at random (can't recall my actual ...
3
votes
1answer
255 views

ArcGIS Raster Symbology - Break contour at 0

In ArcGIS 10, how can I break raster symbology (stretched) at a particular value (i.e. 0). For example, I have a DEM representing both topography and bathymetry and I want a break at the 0 m contour ...
4
votes
1answer
299 views

changing symbology

I have problem with my script. Layers are in one geodatabase, and have names like: orne1942, orne 2003, orne 2009 (the same forpart e.g. orne). Script should changing symbology layers wich have the ...
3
votes
1answer
2k 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 ...
2
votes
1answer
740 views

Update Layer with python, error attribute renderer

I am attempting to automate symbology using python, and ArcMap 10.0. I am importing this script into a toolbox, which I run from arcmap Currently I am getting two errors: 1) LayerObject: Set ...
0
votes
0answers
203 views

MS Access join table values, not recognized by ArcGIS symbology

I joined a MS Access database table to a GIS file. When I try to use symbology (categories) to represent a yes/no value which is in the table file (0/-1) it does not recognize it as a value.
4
votes
2answers
831 views

How to auto-add new values to unique values classification values range?

I am using ArcGIS Desktop 10.1, ArcGIS Server 10.1 & SQL Server 2008 software. I am adding the query layer and directly publishing to ArcGIS Server and accessing the map in a JavaScript ...
3
votes
1answer
141 views

How do you access the Draw toolbar symbol(s) from ArcObjects?

I'm dropping a text element onto a map and I'd like to use whatever settings the Draw toolbar has (font, size, color, etc). Is there a convenient way to access symbol interfaces? Or do you have to ...
14
votes
3answers
460 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 ...
3
votes
2answers
1k 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?
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vote
0answers
444 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
0answers
6k views

How to change the symbology of the layer with python script in ArcGIS ? [duplicate]

Possible Duplicate: Change Symbology of layers from within ArcMap I need to write a script to change the symbology of the layer. I've read all the topics about symbology in ArcGIS-help and ...