Tagged Questions

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
2answers
147 views

Color gradient in symbology in ArcGIS 10.1 for interpolation raster

I have measured noise and want to create with this measured points a noise map with interpolation....is there any way in symbology to create a flowing transition between the different colors for the ...
0
votes
0answers
68 views

Is there a way to create a named symbol in OpenLayers composed as either a multi-dimensional array or as a MultiPolygon?

OpenLayers provides a minimal set of "well-known" shapes which can be used as point icons: /** * Constant: OpenLayers.Renderer.symbol * Coordinate arrays for well known (named) symbols. */ ...
1
vote
1answer
56 views

QGIS Analyst Create Finished Product for MapInfo Client

I use Esri in my day job and am learning QGIS for work on the side. I have a Client that uses MapInfo for creating Posters and Presentations. I have never used MapInfo. I am digitizing geology data ...
7
votes
2answers
176 views

How to display nebulous boundaries between regions with indistinct edges?

I'm trying to map the boundaries between regions which don't necessarily have a hard edge. For example, areas where languages predominate don't have a distinct edge, but instead have a degree of ...
1
vote
0answers
24 views

offset of ellipse marker

Sorry for my english :) I've got a point layer, with angle(real), width(real) and height(real). I want make a ellipse marker that take this values. But how I can offset the marker to left border ...
2
votes
1answer
175 views

Why do some Customised Symbols look good in map but disappear from Legend on Export?

I am using ArcGIS Desktop 10.0 I created some customised symbols for my map which ArcGIS Desktop did not have. To do this I used BMP files and imported the symbols. They look good on the map but do ...
1
vote
1answer
45 views

QGIS hides few graduated points after reopening project

I have a strange problem in QGIS 2.2 (problem is also present in QGIS 2.1). When I add a point (shapefile) layer, apply graduated style and change point size, everything looks fine. Then I save ...
2
votes
0answers
97 views

What is the advantage to using a representation vs a layer file?

I understand that the representation stores the symbology inside of the geodatabase. It creates it's own field for a RuleID. I made a layer file that had 'unique values and many fields' and chose ...
1
vote
0answers
89 views

How to import label classes to make symbology classes?

In Answer to an earlier Question I was able to write SQL Expressions to create label classes. Now, I wish to use those label classes to create symbology classes. It is possible to make label ...
3
votes
1answer
163 views

How can I save and re-apply symbology properties for a classified raster in ArcMap 10.2?

I have a classified raster which has the desired symbology configured in ArcMap, and I want to apply this symbology to other similar rasters. So I use the Save option on the Symbology tab, intending ...
1
vote
1answer
103 views

How to delete label style saved in ArcView?

The answer to my question may be very simple, but I can't seem to find it myself with online searches I have symbology and text/label styles (etc) that I've saved for easy access when I'm working on ...
0
votes
0answers
26 views

arcApplySymbologyFromLayer w/out adding to map

Is there a way to apply symbology from layer without adding to map. I have heard there an environment setting that may allow this? I am trying to both apply symbology and add layer at position in a ...
0
votes
0answers
37 views

maintain different style for each feature in same layer

on feature selection, I am trying to change feature style of selected feature.so that assign different style to each selected feature that exist in same layer. I have done this successfully but when I ...
1
vote
1answer
402 views

List of Offensive Symbols/ Colours for Cartography

I was at a data visualization workshop a few days ago and someone there asked if there are any symbols/colours that might offend people when making charts, the presenter didn't really understand the ...
1
vote
1answer
90 views

SVG symbols for alphabet characters e.g. A, B, C, … etc

Can anyone tell me whether there is a SVG plugin or source (or how to do) of letters of the alphabet e.g. A, B, C, D etc. I want to create a symbology with colour e.g. gray but also with letters in ...
2
votes
3answers
254 views

R - color SpatialLines by attribute

I have a SpatialLinesDataFrame dataset of rivers in R. The dataset consists of lines (river segments) with a "Turbidity" attribute. I want to create a map and legend, where: Turbidity between 0 and ...
8
votes
3answers
640 views

How to use consistent symbology between multiple stretched rasters in ArcMap?

I have a series of continuous rasters representing the same phenomenon over time, so I need to use the same symbology across them all. So I set the stretched symbology of the first raster, with a ...
3
votes
5answers
631 views

How to vary the transparency of symbols within a single layer in ArcMap?

I have a polygon layer which I am drawing in ArcMap using a graduated color symbology: Is it possible to vary the transparency between the classes, so that the transparency tapers off with the ...
1
vote
1answer
29 views

How do I symbol numbers into groups?

I am working on creating soils map and need to group symbolize into greater numbers and within between numbers.. Here is an example of what I am talking about ...
0
votes
1answer
229 views

Picture Symbol Proportion in ESRI Javascript API

I am successfully using a picture marker symbol to represent tree's in a web-map built using the ESRI Javascript API. Is there a method to proportionally size the picture symbol for each scale of the ...
-1
votes
1answer
78 views

How to have custom symbols show up in Symbol Selector of ArcGIS for Desktop?

How do you get Petroleum symbols into the Map legend box (not the content table) instead of the standard "circle or square"? I am looking to use the Unkown (black symbol) and Active / Producing ...
1
vote
2answers
208 views

How to create a symbol with no fill color in qgis?

Where can I find a simple circle to draw it around a point feature. I can change symbol fill color as well as symbol border color. But I didn't find a way to set fill color to no color.
0
votes
1answer
59 views

Dynamically have symbology change as a due date nears?

I need to make a countdown based on symbolization. Let's say I have several groups of sections with a Date field in it. I have when the section is due in the date field. Can I get it to dynamically ...
1
vote
0answers
37 views

Changing the symbology of layer when converting from Layer to KML using Python

Is it possible to change the symbology of a layer file using Python? I have a script that creates a layer file and converts it to kml, but every time I run it the symbology color in the kml of the ...
0
votes
1answer
86 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 ...
0
votes
0answers
26 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 ...
1
vote
1answer
118 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
2answers
196 views

Key for a Heat Map

I have a question about heat maps and the correct way to describe the results. I have a dataset of small historic territorial units which vary greatly in size in different parts of a country. I want ...
0
votes
0answers
55 views

How to set custom break points based on formula?

I work on projects that each require the creation of about 40 maps. In all of these maps, I use Graduated Color symbology to represent concentrations of a different population in area Census tracts. ...
1
vote
1answer
208 views

How do I stop Kernel Density from cutting off symbology?

I need help configuring Kernel Density so that is does not cut off symbology on hot spots. (See pic below) I'm assuming it has something to do with the extent but I could not get it to display the way ...
2
votes
2answers
211 views

How to apply a gradient fill to different polygons in the same layer

I am trying to make a simple map of the world in ArcMap 10.1, and I have a shapefile with all the countries in it. I have the symbology set to unique values, so the countries are all different ...
1
vote
2answers
152 views

What values are needed for a SimpleMarkerSymbol?

My graphicGemetry object contains X and Y values (-9212442.86532579,4421916.145327024) but my image isn't appearing. I suspect there are other data values I need in order to plot my point but I do ...
0
votes
2answers
605 views

Why am I getting 'Error 000732 Raster does not exist'?

I am trying to apply symbology to a raster layer via kernel density analysis. When I run the Python script below in ArcMap, I am get the error message below. I have searched and tried the common ...
2
votes
1answer
201 views

Fading symbology at edges

A general problem for me with digitized material is that it can be too precise. Sometimes I just need to show a line or surface without sharp borders. I don't regularly need to visualize the exact ...
1
vote
1answer
288 views

Is there a standard for oil pipeline symbology?

DEAR PEOPLE FROM THE FUTURE: Here's what we've figured out so far… To develop a map for specific public is recommended using some special symbology. I am in charge to develop a map for an audience in ...
1
vote
0answers
85 views

How to apply categorized symbols to polygon layer with PyQgis?

I'm fetching a polygon layer from postgres like this: uri = QgsDataSourceURI() uri.setConnection("localhost", "5432", "mydb", "postgres", "xxx") uri.setDataSource("public", "my_table", "geom") lyr = ...
2
votes
0answers
155 views

How to create good quality picture marker symbols with ArcMAP

I have created a nice clean symbol in Illustrator. After exporting to .emf format and appending to objects in ArcMap the symbol looks terrible (see Attatchment). Has anyone found a way to import good ...
2
votes
1answer
246 views

10.1 Marker Symbol Rotation Problem

I am trying to create a marker symbol (and then save the symbol as a style), but the origin of the items makes them rotate improperly (see pictures). Is there any way to merge all of the layers of ...
2
votes
2answers
141 views

ArcMap's Join and symbology

I'm still new into the GIS World, and here's what i'm trying to achieve , i have Yemen administrative shapfile with list of governments, and districts,i also have an excel file with a list of migrants ...
1
vote
2answers
529 views

How to resize symbols in the QGIS Print Composer legend?

I am trying to map a count data type via graduated symbol against a chloropleth and the legend is too big. The circles of the graduated symbols are the actual size of their corresponding values in ...
6
votes
3answers
398 views

Should I use a discrete or continuous scale for coloring a chloropleth?

I am making a choropleth for an upcoming local race using D3. There are two candidates running for an election. For any given polygon on my map, if the red candidate has more votes, the color should ...
4
votes
2answers
128 views

How to tell QGIS where to start marker line interval?

I want to tell QGIS where to start with a marker, like: use 3 markers, start at positions 0, 2, 4, and apply an interval of 12 to each marker. However, after searching for hours, I haven't found a ...
0
votes
1answer
84 views

How to avoid Displacement of Marker Symbols with X-Offset

I'm trying to mimick a line symbol style that is comprised of the line and 2 alternating markers. I use an interval placement of 10 units for the 'blocks' (custom svg) and 5 for points, thus every ...
9
votes
2answers
319 views

Is there a method to have the colour of a label automatically match the colour of the polygon indicated in the symbology tab?

My job requires that I produce several print maps every day, for a variety of different users. It is usually pretty straight-forward, but sometimes I have to make a map that uses rather ...
1
vote
0answers
39 views

How to Symbolize by creating tables containing different values (items) and with particular colors?

I work with ArcGIS Desktop 9.3. I want to illustrate my data for water sampling at different points in streams. I would like to illustrate a chart or a board for each point that would countain more ...
0
votes
1answer
182 views

Symbol levels for graduated colours not working in ArcMap 10?

In ArcMap I have set a draw order on my data, however ArcMap is not displaying it as instructed. The red values should be drawn ontop of the green/yellow.
1
vote
0answers
55 views

Qgis 2.0: Several symbols in one line behind a label?

Is that possible in qgis 2.0: If a city have several POIs which I can not draw at their origin location because of the scale of the map or because there are just too much symbols, can I draw them ...
0
votes
0answers
46 views

Is there a way to set different levels of transparency (opacity) for a polygon's border and its interior?

I have some polygons which I'd like to display with their interior displayed at a higher transparency than their borders. Right now, I am doing it by creating two separate layers with the same data ...
0
votes
0answers
29 views

Is it possible for Geoserver to create a WMS that pulls red, blue, green channels from different data layers?

If I have three separate raster datasets available in my GeoServer instance, each with one channel of 8-bit unsigned int values, is it possible for me to somehow create a single WMS service that pulls ...
2
votes
3answers
147 views

Display multiple attributes for one point

I am using ArcGIS 10. How can I display multiple attributes for a single point. For example, I would like to display (graphically if possible) the amenities provided at various recreational areas... ...