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

learn more… | top users | synonyms (1)

2
votes
1answer
179 views

Can you use animated images as symbols in Mapinfo?

How is it possible to use image that blink or change (animate) as symbol in mapinfo? I tried to create custom symbol that blink in mapinfo but after I added it as symbol it didn't blink. Have I done ...
4
votes
2answers
9k views

How to change Symbology of Multiple Layers at once?

Is there a way to change symbology for multiple layers in ArcMap or ArcCatalog. I want to change the symbology of multiple layers at once.
9
votes
1answer
2k views

Permanently Change ArcMap's “Maximum Sample Size” Setting?

I've lately been working on feature classes with a huge number of polygons (e.g. all of the Census blocks within the Chicago metro area). I've been needing to symbolize them by quantities a fair ...
2
votes
1answer
3k views

How do I make text show up on top of Markers using Carto in TileMill

I'm attempting to place intersection markers on a trail map. Each intersection has a number. I can't seem to get the text show up above the marker. If I use the opacity, I can see the text is ...
0
votes
1answer
200 views

Can ArcMap automatically highlight an object on the map its label?

I was wondering if there is a way to highlight a feature (e.g. line) only by selecting its label on the map. Can ESRI autmatically highlight this object or do I need to create some "connection" ...
9
votes
2answers
928 views

How to Create Two Color Lines in QGIS?

I've been working on making mountain biking and hiking maps using Illustrator and I am now trying to move to QGIS so there's real GIS data powering the maps, making updating/scaling them easier than ...
6
votes
3answers
2k views

Is there an ArcGIS Symbol Library PDF for ArcGIS 10.x, an index for symbols/line weights?

ESRI has an old set of PDFs from 2004 showing all the symbols available in ArcGIS at the time and their names. I don't need it often but if I'm searching for a certain symbol and don't know its name ...
4
votes
1answer
711 views

What does “Size/Width” stand for in the symbol selector?

Can anyone explain how to interpret a symbol size of 10 or let's say 100? What kind of units are these? I ask because recently I had to deal with a reference scale and I wasn't really able to explain ...
1
vote
1answer
143 views

Looking for symbology for NAICS codes

I am curious if anyone has come up or has a good graphic style they can share that is symbology for NAICS codes. I have a large dataset that I want to symbpolize based on the 2 digit NAICS industry ...
3
votes
1answer
923 views

Stroked and filled vector lines in Openlayers

I am drawing vector lines, using GeoJSON, in my web application that uses Openlayers. I want the line to be displayed in yellow color with black border. I am using the following for the line styling: ...
7
votes
2answers
5k views

How to change the appearance of a Feature.Vector that's already displayed?

I've created a bunch of Feature.Vectors from Point objects and assigned them a Style. Now I want to dynamically change the appearance of one of the features in real time; e.g., change it from red to ...
6
votes
3answers
1k views

How to place multiple symbols on one polygon centroid?

I am using QGIS for visualizing the health conditions of elderly living in an old age home, some of the elderly have multiple medical device with them and I want to show them on the map. Suppose I ...
1
vote
3answers
1k views

How to write SLD rules with data-defined symbol size and color?

I have shapefile with points. They are classified - Graduated colors. I made SLD file with ArcMap2SLDConverter. I have a task to manual edit SLD file to show symbol diameters relating to field Area. ...
1
vote
1answer
246 views

How to edit symbol diameter related to the catchment area?

I have a table with column Catchment area (in km2), and I need to set symbol diameter based on that column. I need to get .sld file so I'm working with uDig but if you know better software for this, I ...
1
vote
0answers
850 views

Change the symbol for a single feature in ArcObjects?

Is it possible to change the symbol for a single feature in ArcObjects? If so how? I know it's possible to setup the map symbology for different field values of a feature class, but I'd like to ...
7
votes
3answers
2k views

How to make custom, dynamically generated vector symbols in ArcGIS

I am putting together a map of GPS-enabled vehicles, and I am hoping to display them with custom point symbols that change appearance based on a few attributes (things like velocity, heading, and a ...
3
votes
3answers
2k views

Is it possible to convert ArcGIS 10 styles to version 9.3?

I have a style file (*.style) generated in ArcGIS 10.0. And I need to use symbols from this file on machine with ArcGIS 9.3. Is there some way to convert style file from format 10.0 to 9.3?
2
votes
3answers
4k views

Creating symbology for multiple attributes within the same feature class in ArcMap 10

I'm struggling to find a way to take a single point feature class that has multiple attributes that I want as feature layers with unique symbology. Let's call these attributes Depth1 and Depth2. A ...
6
votes
1answer
1k views

How to create a style file for QGIS from a plain text file?

Using QGIS 1.7. I have a plain text file, which lists 115 rgb values against a map code for a geological map. Viz.: $ head gsv1Msymbology.txt MAPCODE RED GREEN BLUE Oc 143 255 255 WAT 255 255 255 ...
1
vote
1answer
4k views

What is the best way to automate the importing of symbology into feature classes in ArcMap 10?

I'm importing several shp files with the same schema using the FeatureClassToGeodatabase tool in Arcpy and during the process I would also like to apply some standard symbology to the feature class. ...
7
votes
2answers
2k views

How to use a field-to-RGB mapping for symbology in QGIS?

Using QGIS version 1.7. I have a plain text file that lists a set of rgb values against a code. I want to use this colour table to colour a polygon layer by mapping one of its attribute fields ...
13
votes
3answers
2k views

Best practices for visualising clustered features in web maps?

I'm looking for the best symbol to display clustered features in the ArcGIS Server JS API. I don't like the "fly-out" animated cluster symbol, as used in the Silverlight API clustering or the JS ...
2
votes
1answer
357 views

Standard Style for Infrastructure

Hi: I'm trying to locate or find out if there is a standard style for municipal infrastructure. Specifically Canadian (Provincial BC, AB) standards for symbolizing water, sewer, valves, hydrants ...
10
votes
3answers
3k views

Changing symbology at different scales in ArcMap?

I am using ArcMap 10 and I want to display my village parcel symbology differently at given scales. I have one idea to copy and paste same layer. But my question is that in a single layer, is it ...
2
votes
2answers
3k views

Symbology or Styles

Anyone know where to find me some more symbology or styles that I can use for my ArcMap 9.3.1 ? I have lots of mxd files on my computer and how do I apply all of my symbology or styles turn on ? ...
2
votes
2answers
1k views

Copying Symbology between layers with different numbers of features

I am working on copying a layers symbology to a number of other layers which have the same geometry, table structure etc, etc but not the same number of features. I have a state wide layer and I ...
6
votes
3answers
1k views

How to normalize choropleth maps of census information?

I'm trying to improve on the census-based maps on this site, which shows census values at 5 scales from Collection Districts through to State. Currently the maps show whole numbers (eg total ...
0
votes
1answer
958 views

What's the best way to author SLD files from ArcGIS? [duplicate]

Possible Duplicate: How to edit or convert ArcGIS 10 layer style to a SLD's file. I'd like to be able to create styled layer description (SLD) files for use with GeoServer. I'd like to ...
4
votes
1answer
454 views

Performance of Picture Marker Vs Character Marker (font)

We have a point data type to symbolise. The feature classes can often contain more than 6000 points up to 20000. There are about 30 different symbol catergories to these points. My question is ...
4
votes
2answers
721 views

Controlling “Fill Properties” in ArcGIS, so that that symbols are visible in the legend

I use marker fill symbols in my legend in ArcView 10, in order to identify different habitats, and frequently have to increase the separation of the symbols in order to make the map more readable. ...
3
votes
2answers
1k views

In the Symbology Properties of an ArcGIS layer, why is the count sometimes not shown?

Sometimes the count column does populate for me, but most times it does not seem to. I haven't been able to figure out a rhyme or reason to it. There is no definition query or anything out of the ...
11
votes
1answer
672 views

Is there cartographic convention to ordering legend items (high-low or low-high)?

When you symbolise a layer in ArcMap, the symbols are ordered from low value to high value by default. Is that necessarily "correct"? I've never officially studied cartography - is there a convention ...
5
votes
2answers
386 views

Symbolizing individual highway network segments in ArcMap

I have a highway layer that I need to style in ArcMap in such a way to differentiate between individual highway sections, ideally using no more than 6-7 distinct colors. Each highway is divided into ...
5
votes
2answers
5k views

Directional Flow Arrows for sewer lines

I am working for the Town of Yadkinville, NC and would like to know how to create a layer of directional flow arrows for sewer lines to be able to turn them on and off at will?
2
votes
2answers
510 views

Different behavior of ArcObjects for different languages

I have the same code in C++ and C# for ArcMap. This code loads a document from disk and trying to get a picture for PictureSimbol object. But in case of C++ error occurs(HRESULT = E_UNEXPECTED ...
6
votes
1answer
4k views

How to apply Mapnik style for OSM data in ArcMAP? [duplicate]

I am loading OpenStreetMap vector data into ArcMAP (using the Download and Symbolize OSM Data tool of ArcGIS Editor for OpenStreetMap 1.1). I'm sure there must be a simple way to apply the ...
3
votes
2answers
2k views

How to quick get all symbols for feature layer with ArcObjects

I have a FeatureLayer and I want to enumerate all the symbols used in it. Simple way - it is to call SymbolByFeature for each features. Something approximately likes: Dim l as IFeatureLayer Dim c as ...
4
votes
2answers
5k views

Change Symbology of layers from within ArcMap

In an active ArcMap session - I want to change the symbology of a layer which is repeated multiple times in the mxd. Can I do this? The basic code I have for getting the layers is below. This is ...
7
votes
2answers
3k views

Modify raster layer display and symbology properties programmatically with arcpy or ArcObjects

I have over 1500 NITF files that I need to be able to modify the layer display and symbology of programmatically from within ArcMap. I need to set the properties outlined in red below: I've looked ...
3
votes
5answers
6k views

How can I symbolize a layer with graduated colors by a date/time field?

I've got a layer of polygons where each has a date associated with it. I want to color the polygons with graduated colors, but I want the colors to start with the newest polygons and fade to the ...
4
votes
3answers
2k views

Are there any well symbols for ArcGIS Silverlight/WPF?

I'm looking for some standard map symbols for a silverlight app. Does anyone know where I could find these? Thanks!
6
votes
4answers
4k views

View vertices in ArcGIS

In ArcGIS, is it possible to change the polyline symbology to show vertices? Or do I need to extract the points via Feature Vertices To Points? This becomes a pain if I want to edit the source ...
4
votes
4answers
5k views

Symbology of contour lines in ArcMap

I have contour lines with height values from 0 to 1030 (sorted by height 110, 115, 120, 125). Values with in-between number (like 5, 15, 115, 135...) should be grouped and colored with same color, and ...
1
vote
3answers
2k views

ArcGIS 9 doesn't recognize ArcGIS 10 .lyr files [duplicate]

I symbolized a parcel shapefile in ArcGIS 10 with about 2 dozen different colors. I need to use this in ArcGIS 9.3 as well, so I saved it as a .lyr file. This works fine in 10. But when I go to 9.3, I ...
10
votes
7answers
643 views

What is the point of standard symbology?

There are several questions on the site asking for standard symbology to represent markers of specific types of objects (i.e. Power Distribution, Crime Mapping, Emergency Symbols, Lakes). What is the ...
3
votes
4answers
1k views

Canvec Symbology in Arcgis 10?

Is anyone working on porting the Canvec Symbology toolkit to ArcGIS 10? How would you go about it if you were? The canvec symbology toolkit is comprised of a canvec.style file (which is an ms-access ...
3
votes
1answer
384 views

Is there an international standard with GIS symbols for power distribution objects?

Like I said in title, Im wondering if there is a standard that points out symbols for power distribution objects, power plants etc... Thanks
12
votes
3answers
1k views

Crime mapping symbology

Are there any standard, publicly available symbol sets for crime mapping? What are their intended applications and their strengths and weaknesses?
8
votes
4answers
3k views

Symbolising One-to-many relationships using ArcGIS Desktop?

I have a polygon feature class which has various extent areas with a name which is unique I also have a table (in a file geodatabase) that has the extent names with a score value. But there can be ...
5
votes
3answers
292 views

Is there a recomended method for symbolizing inland lakes, streams and rivers in a topographic map?

I produce a lot of maps with inland lakes, rivers and streams overlaid over a dem surface symbolized with a color graduation (green for lows and brown for higher elevations) I also use a ...