A thematic map is a type of map or chart especially designed to show a particular theme connected with a specific geographic area.

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Creating prisme in thematics, Mapinfo

Long ago I made some prisme-maps in MI after running the steps in thematic-map with the grit-setup. Now it seems impossible,(the function is greyed out). What determines when able to make a ...
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23 views

Thematics in Mapinfo - multiple intervals from same table?

I´ve got a table where I want to thematize intervals of values like between 0.1 - 1.0, 1.0 - 2.0 and etc., but I´m almost sure that´s not possible, whithout splitting up the table to multiple tables, ...
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48 views

How to create QGIS theme map?

I need to make theme map using diagrams like in MapInfo, can I do it in QGIS? Or can I create a surface using attributes?
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Graphically depict statistical difference between thematic rasters

The graph shows a regression between two raster datasets with classified tree canopy cover: class 1 = 0-10%, class 2 = 10 - 20% ...class 6 = >60% (Figure 1, Figure 2). The spatial resolution for ...
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46 views

Thematic mapping [closed]

What is the best way to develop thematic maps? I would like to generate pie charts and fill polygons with different colors depending on a parameter value. I'm working with ExtJS 4.2 and OpenLayers.
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2answers
107 views

Flannery compensation in Leaflet JS

I'm creating a bubble map using Leaflet JS. Everything is working smoothly (LeafletJS is awesome!) but now I'd like to try flannery compensation on the bubbles. I can't find the math anywhere though. ...
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1answer
49 views

MapInfo Thematic mapping - line width based on a field

I want to apply thematic mapping to a layer in MapInfo with varying line thicknesses based on a float column. Is this possible?
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1answer
59 views

How to display raster attributes by default?

I have a 4-bit thematic raster image with a color map from white to dark blue (Figure 1). The values 1 - 6 represent tree canopy cover at various breakpoints. I also created a raster attribute table ...
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Map Info: Thematic Mapping Symbols part printing

I have produced a series of thematic maps for graduated housing figures, using a symbol which I customized, in three different tables displayed in a layout. This looks fine in the map window, ...
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271 views

How is a geographic heat map different from a colored statistical thematic map?

From Wikipedia, A heat map is a graphical representation of data where the individual values contained in a matrix are represented as colors. Apparently, a geographic heat map is only one ...
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1answer
279 views

How to remove trailing zeros from QGIS Graduated Style Class labels?

I'm sure I've seen a solution to this before but now I can't find it. When using the graduated fill style in QGIS I get lots of trailing zeros in the labels. This makes my legends look messy in the ...
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1answer
244 views

Thematic map with points QGIS

I would like know how can I make a thematic map (soybean production) with density points. In this case the points are randomly plotted in a municipality area. Please, see an example in the image:
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2answers
252 views

Enable dynamic layer with Arcgis 10

I'm creating a flexviewer application (arcgis API for flex 3.4) with application builder. I'm new with flexviewer. I want to add thematic widget. I was able to add the widget. But when I want to run ...
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1answer
54 views

resampled thematic map accuracy

I've generated a map of ecoregions based on some environmental data using a semi-supervised classification where I combined a statistical clustering with random forests to generate my map. I created ...
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1answer
137 views

MapInfo Thematic Mapping - All other values?

Relatively quick question here, how do I go about adding a style for all other values using individual value thematic mapping? Thanks, Alan
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1answer
234 views

Ternary Legends - how to represent in Arc

I've got a composite image built up from Red Green and Blue composite colours. Each channel represents the differing concentration of a different variable in each location - with 0 being the lowest ...
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1answer
4k views

How to create an attractive choropleth map in R?

I've been experimenting with choropleth mapping techniques in R, having reaped the benefits of ggplot2 for creating beautiful graphs within a powerful data analysis package. When it comes to mapping ...
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184 views

Is it possible to automatically create categories with mapserver?

I have a mapfile connecting to a postgres/postgis database. To create a thematic map I can set a class item and a number of classes, for example: CLASSITEM "aantal" CLASS NAME "0" ...
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23 views

Retaining original thematic colors in a USA source shapefile [duplicate]

Possible Duplicate: Adding Layerfiles (.lyr) to Qgis New to QGIS and need a lot of help! I am using QGIS with MAC - I have downloaded a USA thematic map but when I open it in my system it ...
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1answer
1k views

Create new polygon layers from postcodes latitude & longitude

First at all, I want to say that I am geocoding enthusiastic but have no formal background on GIS. I'll do my best to use the right wording and make myself clear what I am striving for. Also the only ...
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147 views

How to find features with NULL values?

I have a layer to analyze and I want to create a thematic map with rule based feature. There is a strange behaviour. I want to find all objects with no data (NULL). All empty objects. The zero value ...
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1answer
2k views

How can GeoJson polygons be colored programmatically using OpenLayers?

I'm experimenting with dynamically setting the color values of a geojson polygon. In my geojson file, there is an attribute for each polygon called pop_den. I am trying to update the fillcolor of the ...
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1answer
654 views

Is dynamically generating Choropleth maps a solved problem?

I am trying to work out what mapping tools I would need to use to dynamically create Choropleth maps from our data. I am working on a project where the backend is a big database of statistics, and ...
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1answer
123 views

Different colours for touching lines on MapInfo?

I am creating maps for surveyors showing different sections of roads. The start and end points need to be clearly visible so I am using a Region IndValue thematic map. However, sometimes when an ...
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317 views

How to Make a Thematic Map with ORACLE using MapXtreme?

I want to make a thematic map with Oracle source longitude and latitude values. I have made thematic maps with tab file source. Part of the code looks like this: ...
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6answers
411 views

Which program that merges excel data onto shapefiles is easiest to use?

some options for merging looks like fusion tables, vizmaps, and these 2 http://mapbox.com/tilemill/docs/guides/joining-data/ ...
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1answer
494 views

How to layer statistics from Excel onto a map?

Would another free app or program be better and easier to do this than mapbox.com ? I simply want to layer census 2010 data by shading areas onto a map like on theatlanticcities.com/posts/map/ & ...
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117 views

Thematic maps on Non Spatial Data in MapGuide

I need to create the thematic map on a polygon layer. But the data is not available in the layer; I am using Postgres database for that. It means I need to create the themes on layer using non spatial ...
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142 views

Setting border-style to 'no pen' using QgsGraduatedSymbolRendererV2

I am developing a QGIS plugin that, after a series of inputs, will produce a thematic map using the QgsGraduatedSymbolRendererV2. Because the polygon are very small, the boarders make it such that ...
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2answers
938 views

How do you choose the classifications on choropleth maps?

I find myself more and more struggling over defining break points when displaying choropleth (aka thematic) maps to view by others. Does anyone have any suggested references that help guide, both how ...
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7answers
905 views

How to automatically set polygons borders to improve map readability when rendering thematic maps?

When mapping an value as a color to render a thematic map the objects borders can alter the map readability a lot. For example in this thematic map of the US counties with black borders: There are a ...
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1k views

Multi-Colored Polygon in Thematic Map

I have to make a thematic map with an attribute table with duplicated features but different attributes. See below: FEATURE ATTRIBUTE ------------------- 1 bl 1 gr 2 gr 2 ...