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

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0answers
64 views

About symbol position

I have to draw in ArcGis a graph which has the end points of each segment with a circle. The circle has to be unique at the same point when two or more end points are coincident. I’m using the font ...
3
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1answer
133 views

Symbology for Unique Values with Domain

I'm wondering if there is a workaround to this. I want to symbolize a feature class categorically by unique values. The field that I'm doing this on has about 5 unique values. I also have a coded ...
2
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1answer
132 views

QGIS link values longer than the links?

Can you please help me to correct link rapresentation when the thickness exceed the links. In the image you can see the value on two consecutive links that generate a bad view. I think it depends on ...
10
votes
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
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1answer
789 views

Color ramp in multiple attributes symbology (Arcmap)

I am trying to use the "multiple attributes" symbology tool in Arcmap 10. I would like to divide my data in 2 categories. For each categories, I would like to display a color ramp. I read ESRI's ...
0
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2answers
853 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 ...
2
votes
1answer
110 views

Display a raster stack with several bands in ArcGIS?

I have already made a raster stack (5 bands in one TIFF) of my multitemporal Landsat images in R and have also clipped a smaller region of every raster stack for each image. Now I want to do some ...
2
votes
1answer
110 views

Is it possible to set the color of a symbol from an attribute of the graphic?

I have a feature layer used in a client flex application. The feature layer is used to publish a feature class that has many attributes. Among those attributes there is one named "color". As its name ...
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2answers
99 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
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2answers
191 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
399 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.
2
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1answer
125 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?
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0answers
104 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
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1answer
44 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
votes
1answer
309 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
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1answer
141 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! ...
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0answers
223 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
85 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 ...
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2answers
1k 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
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1answer
97 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
125 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
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1answer
91 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
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1answer
591 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 ...
2
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1answer
220 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 ...
0
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0answers
143 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 ...
1
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0answers
141 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
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1answer
222 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
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1answer
469 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 ...
8
votes
3answers
280 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 ...
4
votes
3answers
77 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
27 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
94 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
93 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
815 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
436 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
4answers
151 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
154 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
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0answers
24 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.
4
votes
1answer
300 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?
0
votes
0answers
198 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 ...
0
votes
4answers
3k 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
94 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
442 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
122 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
512 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
97 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
183 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
225 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 ...
2
votes
1answer
1k 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
437 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 ...