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)

0
votes
0answers
8 views

stylizing/symbolize openlayers based off GML

I am completely new to openlayers and am kind of learning as I go along. I created a GML using QGIS and would like to call data from it. It isn't stylized (specific icons per attribute). I would like ...
0
votes
0answers
11 views

Differences between APP-6A and APP-6B in LuciadMap?

I'm using luciadmap 2013.1 and, from what I understood, one can switch between APP-6A and APP-6B symbology like this: new TLcdEditableAPP6AObject(ELcdAPP6Standard.APP_6A) new ...
1
vote
0answers
14 views

ArcPy script using 'symbology.addAllValues()' failing [on hold]

I'm having a problem trying to use symbology.addAllValues() on a layer with Unique Values Symbology. Unfortunately, I can't paste in actual code here since the machine I'm working on is classified, ...
2
votes
1answer
69 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
votes
0answers
14 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 ...
1
vote
0answers
31 views

Style symbolization: compute Label Fields change?

Situation: I have a Style File to symbolize data of a FeatureClass (FC) in a GDB. In the definition of Layer properties the configuration is by Categories > match to symbols in a style (picture ...
0
votes
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
votes
1answer
24 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 ...
1
vote
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
votes
0answers
35 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 ...
-2
votes
1answer
43 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 ...
1
vote
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 ...
0
votes
0answers
10 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 ...
1
vote
0answers
40 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 ...
1
vote
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
vote
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 ...
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 ...
2
votes
1answer
80 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. ...
1
vote
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 ...
0
votes
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
votes
0answers
16 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, ...
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 ...
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
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 ...
2
votes
1answer
50 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 ...
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 ...
1
vote
1answer
44 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 ...
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 ...
0
votes
2answers
33 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
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, ...
1
vote
1answer
32 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
0answers
12 views

How do I get the default NLCD symbology back after clipping/projecting?

NLCD landcover rasters downloaded from MRLC have default legends and symbology as shown here: http://www.mrlc.gov/nlcd11_leg.php However, when I extract the raster through a mask, or reproject the ...
2
votes
1answer
68 views

How to avoid a QGIS crash when it is appended a symbol layer in a symbol?

When I run the next code at the Python Console of QGIS with a line vector layer: symbol1 = QgsLineSymbolV2.createSimple({'penstyle':'solid', 'color':'black', ...
1
vote
0answers
49 views

Is there any way to mass rename or import field names in Labels in Symbology?

I need to load an .avl that sets the symbology for me, but I also need to give the unique values their name, which is not what the Symbology->Category->Value Field uses, but another field in that ...
0
votes
0answers
21 views

How to apply symbology to raster and keep labels?

I am using Arcgis and I have this layer file with a specific stretched color ramp and custom High and Low labels. Whenever I apply symbology to any raster (I am doing a batch apply symb with arcpy ...
1
vote
2answers
71 views

Displaying Buffer overlap in ArcGIS Pro with Intersect

I have created some buffers around some points in ArcGIS Pro, and I am wanting to recognize the area of the buffers that overlap with another buffer within the same layer with a different color. How ...
0
votes
0answers
29 views

How do I create Multivariate Symbology (graduated symbol and color classification)

I was wondering if anyone knows how to create multivariate symbology. I have point data with a capacity number and a utilization rate for a type of youth center. I want to show the capacity as a ...
4
votes
1answer
73 views

How to visualize texture along borders of multipart polygon

I came across this map and would like to replicate the textured styling found along the borders. I'm starting with a multipart polygon but my process has perhaps too many steps. I'm using QGIS ...
0
votes
0answers
19 views

Layer File Changing with Feature Class Edits

First post on this forum. I tried searching for an answer but really couldn't find what I needed. Feel free to point me in the right direction if I've missed it. I have several oil wells that I plot ...
0
votes
1answer
31 views

New style and symbol with ArcMap

I a beginner with the ArcGIS platform. I would like to create a new style with ArcMap. I try with the menu : Customize -> Style Manager Style Manager : http://hpics.li/9471c73 My new style appears ...
0
votes
0answers
11 views

how can i change property of a symbol using qgis 2.8 c++ api

i have an application written in QT 4.6, and use the C++ API of QGIS the application will display the data of the s57 file in a MapCanvas i managed to read the file but how can i , for a specific ...
0
votes
5answers
94 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 # ...
3
votes
2answers
49 views

QGIS: additional description in legend [duplicate]

In ArcMap there is the possibility to have a symbol, the symbol description or layer name and an additional description in your legend Layer Properties --> Symbology --> Fetaures: Single symbol --> ...
2
votes
1answer
51 views

Changing Field Name/Apply Symbology from layer using ArcPy?

Using ArcMap 10.1, I want to use the Apply Symbology From Layer tool, however my field names are not the same. I'm having trouble understanding how to change the Field Names in a layer. I tried the ...
2
votes
1answer
41 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 ...
2
votes
0answers
53 views

How to change the symbology of selected features in QGIS

In QGIS selected features are normally highlighted in a different color to draw user’s attention on the selection. The default color can be changed programmatically. As a nice to have my standalone ...
1
vote
1answer
29 views

symbology with 2 fields - one for the color and another for the shape?

for example, i have two fields: 1 - a, b, c 2 - X, Y, Z and i want to do like this: a - square, b - circle, c - point X - blue, Y - red, Z - pink and when i have a and Y - it whould be red square.
1
vote
1answer
44 views

Styling map and generating tiles for Mapnik and/or GeoServer?

I have almost 5 shapefile layers(contains point,line,polygon), now I want to style different layers, for example, different layers, different attributes of the same layer will rendered with different ...
2
votes
1answer
54 views

Rotation of polygon fill symbol using ArcGIS for Desktop?

In ArcMap (ArcGis 10.1) I'm trying to find a way to fill a polygon with a symbol in different orientations. Is it possible? Example: look at the red semicircles, I would like to do something like ...
0
votes
1answer
35 views

How do I get a non-circle marker in a category map on CartoDB?

I have a CartoDB map which has two layers. I want both to display, and I want both to be category maps — there are 3 categories in each which display as three different colors. But I want to ...