Tagged Questions

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

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0
votes
0answers
51 views

Export ArcGIS 9.3 .lyr symbology styles to QGIS

There are numerous posts on GIS.SE on exporting ArcGIS 10.x symbology to SLD then to QGIS; however, I don't think this is possible for ArcGIS 9.3.x. Is it possible to convert *.lyr styles from ArcGIS ...
0
votes
0answers
47 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 ...
0
votes
0answers
22 views

“Fade” or change the color of MIL2525C Symbols in ArcGIS 10.1.1?

Using ArcGIS 10.1.1, I am able to update, remove, and add MIL2525C symbols to the map with the MessageHelper. After a certain period of time, I would like the MIL2525C symbol to either "fade" in ...
3
votes
3answers
35 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 ...
1
vote
2answers
63 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
27 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
70 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
56 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
38 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
votes
1answer
37 views

How to symbolize in ArcGIS Categorized different color

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
votes
0answers
42 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
vote
0answers
28 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
59 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
1
vote
1answer
65 views

Copy and Paste symbology in Raster?

Hi all, 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: ...
7
votes
1answer
139 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
56 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 ...
0
votes
0answers
12 views

How to create symbology? [duplicate]

Please suggest how to create symbology in QGIS? As I am Infrastructure layer with the help of QGIS and I want to represent different roads with different colors and widths but right now I am unable to ...
1
vote
0answers
13 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
vote
0answers
24 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
38 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 ...
0
votes
0answers
57 views

Unique Polygon Border Colors and Matching Label

I'm working with zip codes, and I'd like to have each zip code polygon have a uniquely colored border with a corresponding label color. So, ideally, zip code 12345 would have no fill color, a blue ...
2
votes
2answers
113 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 ...
0
votes
1answer
77 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
49 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
56 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
19 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
80 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
48 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
votes
3answers
152 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
44 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
88 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
50 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
100 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 ...
3
votes
1answer
78 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 ...
3
votes
1answer
93 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 ...
1
vote
1answer
199 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
93 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
72 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
172 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
67 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 ...
13
votes
3answers
245 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
125 views

How can I keep the color of the shape file in arc constantly?

I am using arc gis 9.3 when I use a color for the shape file it changes everytime when I close and open the arc map so how I can constantly keep the color of the shape file that I work with
1
vote
0answers
106 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
1answer
343 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 ...
0
votes
2answers
65 views

Unique and Range value symbology in Arc Desktop 10.1

I am facing a issue in which i have to give symbology depending on unique value of one attribute and range value of another attribute. That is symbology on gender and age. like symbol1 - ...
1
vote
2answers
83 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 ...
8
votes
3answers
217 views

How to present three spatial variables in one map? [closed]

I want to assign 3 category of variables in a single map. In other words, I have to produce a cartographic visualization of the damage including a legend listing: damaged surface area in the ...
8
votes
1answer
101 views

Why is the OGC Symbology Encoding standard not being implemented and is SLD an alternative?

I searched exhaustively over the internet as well as at this How to export Symbology from ArcGIS to Microstation or QGIS? but didnt find a satisfactory answer. Hope to get the answers from the experts ...
0
votes
2answers
53 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 ...
1
vote
1answer
275 views

Is there any way to set polygon features fill color and outline programmatically?

By some process I am creating a polygon feature layer. Before adding the layer in the map, I want to set polygon's fill color to no color and set polygon's outline color and width. I am working with ...

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