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

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31 views

Use multiple double attributes to symbolize a line shape in ArcGIS

I need to represent multiple attributes to a line shape. The attribute table already have the fields I need to represent. One of the attributes is the total number of commuters between cities; this ...
2
votes
1answer
58 views

Create points symbology with more than one parameter

In QGIS i would like to create symbology for points layer where the symbology will take into account more than one parameter (currently two). i.e.: My points layer has street names and house numbers ...
0
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0answers
21 views

Style symbolization: compute Label change?

Situation: I have a Style File to symbolize data of a FeatureClass (FC) in a GDB. The definition of Layer properties is set to "Categories" > "match to symbols in a style". Label is linked to a value ...
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0answers
13 views

Rotating symbols around two axes in ArcScene

Using ArcGIS 10.3.1 I want to visualise the strike and dip (essentially the same as aspect and slope) of measured rock faces in ArcScene: the idea is to have a coloured DEM of the field area, with an ...
0
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0answers
14 views

how to rotate a symbol

I am working in c++/python/QT 4.5 with the api qgis 2.8.2 My application receive data from a communication port that indicate the change of position of an object diplayed on the map and represented ...
2
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1answer
23 views

Change Symbology with different Column Value

I am using ArcMap 10.0. I am trying to change Cadastre colours when the values of the box EXTRA is set to 0,1 or 2. So basically, I need the default values set to 0 (already completed). Properties ...
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votes
1answer
37 views

Plotting points into segments on roads exactly with ArcMap?

I have a set of data (see the table below) which has an origin lat and long and destination lat and long with speed. I just want to plot lines between the origin and destination, and color code them ...
0
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1answer
215 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 ...
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1answer
24 views

What is the color standard for roads or Transportation for USA?

Are there color standards for US Transportation roads such as Interstate, County,, Interstate, local, private, state highway and other roads out there ?
2
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0answers
32 views

Graduated symbols not appearing for all polygons

I'm using ArcGIS 10.2.2. Trying to map some city populations using graduated symbols. Should be simple, but while most of the polygons are being assigned symbols, some aren't. For example, in the ...
0
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1answer
523 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
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1answer
232 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 ...
2
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1answer
40 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 ...
1
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0answers
9 views

Does the display size of a map object in Google Maps affect the [% repeat] value for a symbol on a polyline?

I have two Google map objects on my page: 1) height: 121px; width: auto; (This is the smaller map). 2) height: 770px; width: auto; (This is the larger map). Both of these maps have the same ...
1
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1answer
38 views

The graduated symbology doesn 't take into account the attribute I need in QGIS

I m working on a project on QGIS I have a point shapefile vector that represents my store In the attribute table, i have bunch of data such as size, unit per transaction and most importantly store ...
0
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0answers
9 views

Seismic 2D shot points in ArcGIS 10.1

Which is the available Seismic 2D shot point renderer to be used in ArcGIS 10.1? In ArcGIS 10 I know of Exprodat’s plugin ...
2
votes
1answer
176 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
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2answers
232 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
3answers
151 views

How to highlight the number of overlayed lines in ArcMap?

Using ArcMap 10.2, I have a feature class composed of several lines representing bus routes for the same transit line. There are different routes according to schedules. In the image below, each route ...
3
votes
1answer
959 views

Working with legend patches/symbology in ArcGIS Desktop?

I am working with a legend in a map from ArcGIS 10.1. The map is used as a template and will be used many times to create different maps. The legend is used to show a soil type and its descriptor: ...
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1answer
45 views

Exporting map to PDF, fix polygon bleed

I'm trying to export my map. But ArcGIS generates PDF (or other) maps that is not the same as in the layout view. I have polygons that is filled with a pattern, and this pattern is drawn over the ...
1
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1answer
45 views

Style Sheets: Setting up a style sheet to change only styles, no other fields

I'm trying to create style sheets for my projects. I only wish to change the Style, without affecting labelling or the Fields. And I can't, for the life of me, get it to work. I'm using .qml files and ...
1
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1answer
64 views

QGIS just installed on MAC OSX - styles do not work properly

I am a newbie with QGIS - I have just installed QGIS 2.10.1-Pisa. I am following a youtube tutorial by Steven Bernard and I just found that the styles do not work properly (I run Mac OS X Lion 7.5.1. ...
2
votes
1answer
29 views

Assigning Arrow Symbology on Point-to-Point Connections

I have an excel file containing points of departure and arrival places and their lat/long. I have lat/long for both arrival and departure cities in spreadsheet. I have created seperate point feature ...
1
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1answer
350 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 ...
5
votes
2answers
128 views

QGIS expression builder include relation attributes

I have a set of symbols based on a table in postgis such as this id|type|action_1|action_2|geom In QGIS I have this table symbolised using a rule expression which works effectively. However this ...
5
votes
2answers
6k 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?
1
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1answer
22 views

QGIS: How to change symbology of a continuous raster to discrete with unequal intervals?

so I'm new in QGIS and currently trying to convert my ArcGIS-layers into QGIS. One of these layers is a slope gradient raster. I want to change the symbology so that a specific rang of gradients ...
2
votes
1answer
160 views

ArcGIS 10.1 Graduated symbols drawing order not displayed correctly

When I use graduated symbols for a polygon layer to display population density, the layer is always displayed on top of all the other layers even if I dragged it to the bottom of the Table of ...
0
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5answers
89 views

Why is ArcPy script to apply symbology not working?

This is the first python script I have tried to write and I can't find out why it is not working. All I want to do is apply symbology from one layer to another. Working Code: # Name: ApplySym.py # ...
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0answers
15 views

Importing representations from a Layer File

I'm trying to incorporate representations as part of my data model. I have set up representation rule for my feature class, which is part of a feature dataset. The way I have the data categorized is ...
0
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0answers
15 views

Need help on how to move a symbol over a map

I'm working in c++/qt and the c++ api qgis 2.8.2 In my application i load a map with a s57 file, this part works perfectly, now i need to make some plot representing different object like boat, plane, ...
4
votes
5answers
10k views

How to change Symbology of Multiple Layers at once using ArcMap/ArcPy?

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.
4
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0answers
4k views

Assign symbology to multiple layers in one operation? [duplicate]

Is it possible to assign the same symbol to multiple layers of the same geometry type within an ArcMap document in one operation? For example, I was hoping to: Select multiple layers in the TOC ...
0
votes
1answer
37 views

How do I classify my counties to color the bottom / top 25% in area?

I have a map of my state with county boundaries. What settings should I use to color the counties based on their area but only if its area falls in the bottom or top 25% of county area? For example, ...
3
votes
1answer
88 views

Set picture marker symbol for a layer with arcpy (ArcGIS)

I have an ArcGIS map document with one layer symbolized with Categories > Unique values. I want to update symbology for this layer by specifying a path to a picture marker symbol for every unique ...
2
votes
3answers
605 views

Importing SVG symbols into QGIS

I've downloaded the SVG icon pack here: https://www.mapbox.com/maki/ How do I import these symbols into QGIS? As far as I can tell I need an .XML defining each symbol. Also using the Import from ...
0
votes
1answer
164 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 ...
2
votes
2answers
686 views

Applying Stretch to Multiple Rasters in ArcGIS Desktop?

In ArcGIS Desktop 10.0, how can I apply a stretch, which I would normally do by selecting 2 standard deviations in the "Symbology" tab of Layer Properties, to 200 rasters simultaneously?
3
votes
1answer
60 views

How to apply a radial fill to a voronoi polygon centred on its original home point in QGIS?

I'm working with a point layer (airports from OpenFlights), and I want to create a map of distance to the nearest airport. I thought I might be able to do this by using radial fill on the voronoi ...
3
votes
2answers
73 views

How to create a dashed polygon border in C++?

In my maps I have a symbol, his type is polygon, I want to change the line style of the border, actually is solid , I had to put it in dash Is there a simple way to change it ? i think to the ...
2
votes
1answer
48 views

ArcGIS Desktop 10.2.1 and one-to-many relationship

I've been struggling to link a feature of 450 municipalities and approximately 60,000 fires that have occurred over the last 15 years. I've attempted to make a relationship class. I can see the ...
5
votes
1answer
226 views

Mask Bridge with Road

Is there a tool to create mask between bridge line/point on road? The requirement to have gaps 0.2mm between road and bridge and the offset fill with white color. For now, I add a white line attach to ...
1
vote
1answer
42 views

Updating a column in MapInfo based on Symbology or colour

I am transferring a large dataset from MapInfo (V 12.0.2) to QGIS (V2.8.1) and I want to be able to create a column in the MapInfo attribute table that differentiates features with different ...
11
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
vote
1answer
31 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
32 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
25 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
500 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 ...
1
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0answers
7 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, ...