Questions tagged [thematic-map]
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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Dynamic Category thematic map
I am working in QGIS 3.8.3-Zanzibar on a shapefile with polygons.
I am zoning by selecting the polygons and giving each group a different number (a zone code).
In order to visualize it, I have a ...
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How can I edit an existing thematic shapefile composed of contiguous polygons in QGIS
I cannot edit an existing thematic shapefile layer composed entirely of contiguous polygons. I created the layer many years ago using ArcGIS Desktop; the themes represent the depth of water in a ...
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Importing map found on the Internet to QGIS [closed]
I am new to QGIS and I have learned some of the basics.
Now, I have found a Soil Map of Germany I want to work with on the internet.
My tasks now are as follows.
To reduce the size of the map with ...
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How to do different thematic analysis to same GeoJSON in Leaflet
In order to do several Thematic Analysis to my GeoJSON Polygon file, I have to load each time the duplicate version of it, in order to have that color thematic of the specified attribute (This is not ...
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GeoServer create thematic from point to area
I have some point data like first image.
I want create thematic with this data. But I can't create GeoServer style like this.
You see data on map like this:
How can i create style which i see ...
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Filling or splitting polygons proportionally based on variables using QGIS?
I want to divide each country into three separately coloured areas, like this:
The proportions of the three coloured areas must based on three columns of attribute data in the country shapefile's ...
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Remove Theme from MapInfo TAB file
I have been supplied with a MapInfo TAB file and when opened in MapInfo 15.2 (64bit) the layer is displayed along with a Thematic Theme Layer.
The symbology generated by the Thematic Theme no longer ...
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Scholarly articles that compare and contrast different thematic map types or discusses what thematic map types are better in certain situations? [closed]
I'm writing a paper that involves some GIS work that I've done and as part of that I need to analyse an existing cluster map and explain why a heat map would be a better solution. I can provide plenty ...
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How to display Values as Labels in Thematic Map - Mapinfo
I was able to produce the Thematic Map for Agricultural Production for the various boundaries. How can I display the production value associated with each polygon as a label (to make it look like the ...
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Thematic Map from a STATCAN Shapefile [closed]
I want to create a thematic map of my data. I downloaded a shapefile from Statistics Canada website displaying the various agricultural regions. I have data in Excel
How do I add this data and match ...
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Attribute table shows histogram/pixel count for a thematic raster image, but on enquiring, every pixel's value is zero
I have a thematic raster image containing 18 land use classes (like built-up, water bodies, plantations, forest, etc.). When I display this image in a GIS application (Arcmap/Erdas IMAGINE), the map ...
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Using map theme on qfield?
I created two presets on qgis and they work very well when switching from one to another, yet on qfield and when I choose a map theme some layers are not displayed especially those that have a ruled ...
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Using excel info to create thematic map
So, I have an excel spreadsheet with information regarding people within a certain zip code. I basically need to make a map that shows the amount of people within each zip code either using dots or ...
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Placing value on top of bar chart thematic map using MapInfo?
Is it possible to place the value on top of each bar in a bar chart thematic map in Mapinfo?
This is how I did it so far: I wanted to show a value per zone (the amount of trips generated in one area) ...
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Is there a "clone view" functionality in Qgis like in MapInfo
I am currently working in Qgis (2.18.11) and I would like to view mi map window duplicated so I can represent a thematic map with different values in each window and compare both.
I usually do this in ...
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3
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Rules within thematic maps in MapInfo
Is there a way to set specific rules when creating a thematic map in MapInfo? I would like to exclude the polygons that have too many of the items I want to represent from the thematic map (something ...
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Identify only visible features in QGIS
I have a thematic map layer Rekryterare in QGIS. The layer is defined as identifiable. The question is how can I make the thematic categories of this map layer unidentifiable when they are invisible ...
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How to use thematic layer for supervised classification in eCognition
I'm classifying vegetation in eCognition. From ArcMap I already have a shapefile with training polygons that I would like to use for this but so far I was only able to insert this as a thematic layer ...
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Thematic Graduated Bar Chart from polyline
I have a road broken into 10m sections, each section has a road condition score, I was hoping to create a bar coming of each section based on that condition and also color them based on a categories e....
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Proportional Coloring within polygon for multiple variables
I'm new to QGIS and I am doing some demographic analysis of Ethiopia. I have a vector map with each of the country's administrative zones:
Within the attribute table, I have data for religious ...
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How to show labels exactly around a circle in QGIS?
I found an interesting way of proportional symbol mapping and labeling, I think this was made by Adobe Illustrator but I couldn't find out if it can be done in QGIS. What I am interested in the most ...
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How to access to the underlying grid table behind Mapinfo's Grid Thematic map?
I created a grid thematic map using "Mapinfo - Map - Create Thematic Map" function. Now I want to know the distribution of the data from the grids.
But the "Browse Table" option is not functioning ...
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Using grid cells and point data to calculate encounter rates across surveying area?
I am fairly new to GIS.
I am currently evaluating wildlife sightings across transect lines and want to calculate the occurrence of encounters, per area surveyed. So essentially look at encounter ...
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Georeferencing postcodes into bubble map with Cartodb
I have recently discovered Cartodb and I am trying to create a bubble/thematic map of postcodes. I have a csv document with one column of postcodes from around the UK. I have uploaded the dataset and ...
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Is there an automatic way to create a diverging colour scale centered around zero?
I'm trying to plot a map of the residuals of a linear model. My residuals centre around zero and can obviously go in either direction.
Is there an easy way to apply a graduated colour scale to these ...
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Grid thematic map in Mapinfo
I have a tab file with the contour lines for an area, and also a tab file with the land polygon.
Now, I'm following a tutorial written by a colleague a couple years ago, where a thematic map is ...
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Color ramp resources other than Color Brewer?
I am looking for more resources on color theory in cartography. When to de-saturate a color? Or if you start with one color, how do you create a ramp from it? RGB or HSV? I can hack at it and come up ...
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Tweaking some aspects of OpenLayers 3 output using QGIS2Web
I have made a thematic map in QGIS and exported it to OpenLayers 3 format using QGIS2Web plugin containing 4 layers. I need to tweak the following things if possible:
I want to remove check boxes and ...
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681
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Representing data on thematic map in only two colors in qgis
I am very new to qgis, and i am doing a project on representing child immunization on thematic maps.
I want to represent the data which is even number in one color and odd number data in another ...
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Locating and adding state layers to a QGIS map
If I wanted to add layers for a state (Indiana) in a program like QGIS so I could produce several maps (Infrastructure, Water Resources, Mineral Resources, and HAZMAT concerns), how would I locate and ...
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Dashes instead of "to" in mapinfo thematic legend
The thematic legends for ranges are automatically set to the word "to", for example "10 to 20" "20 to 30" etc. I need to write it with a dash instead: "10-20", "20-30". Can I change the default ...
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Seeking free tool to make choropleth map with administrative borders?
I have a numeric table for some administrative division like county, state, province, oblast.
Is there a free tool that I can supply with my table and get a choropleth map?
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Creating thematic map where individual points are basically grid in MapInfo?
I want to plot a heat map which shows the different usage in different areas. But the thing is, in my original dataset, the data got truncated, which means that each point represents a small area ...
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Creating fishnet from thematic polygon data?
I need to create a regular grid containing attributes from other thematic data from ecological data. I am in effect creating a homogenous polygon raster and adding information from another dataset ...
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Creating disease risk map in QGIS? [closed]
I would like to create a risk map using RFE Data and Tiffs but now I realised that I actually have no idea how.
I have dowloaded .Tiff(Region), .hdr and .bil(Rainfall/RFE) files from the USGS page, ...
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Thematic map using date field in ArcGIS [duplicate]
I need to create a thematic map for time intervals (ex. 1/1/1920-31/12/1929). To every polygon corresponds a date (from a date field) and I need them to be coloured depending in which interval they ...
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Creating thematic map in ArcMap?
I want to create a thematic map in arcmap using the fields NAME and NOTES for 3 categories of polygons:
where the name cell is null
where the name cell is filled
where the name cell is null, but it ...
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114
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Overviews for thematic raster maps
I have a landuse raster map with integer classes (1:agricultura, 2:pasture, etc). I'm trying to publish it through GeoServer and I'd like to use image overviews to speed things up. I tried gdaladdo ...
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openlayers 2 coloring a polygon layer based on a database ( postgresql ) table that is different from the attribute table of the layer
I have trouble coloring the polygons in my layer based on the values in a certain field in another table in my postgresql database that is different from the attribute table of the layer itself. Is ...
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287
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Making thematic layer 50% translucent in MapBasic?
I'm trying to make this enhancement to an old program written by another author.
I was able to make the layer translucent prior to Shade Window command, but its not working.
Here is the code:
Add Map ...
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155
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Displaying directional bandwidths in QGIS
I have a traffic model and want to display the results in QGIS. I have a shapefile for the road network and can easily annotate the flows onto this. However, I want to display the information as ...
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Creating thematic map where individual values are displayed as colors and range values are displayed as shades of those colors?
I am trying to create the following thematic map using Mapinfo professional:
I have point data that is displayed as a grid. I need to create a thematic map where I show two fields - one representing ...
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QGIS Print Composer - Display Symbols for Empty Classes?
I am working on a map of mortality rates for several racial/ethnic groups and I have created custom classes to encompass the rates instead of the QGIS classes created through its various modes. This ...
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585
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Custom range value and colour thematic in mapbasic
I'm working on a tool to help my work. I managed to make a thematic, but the range of values and colors appear automatically. Here is the code:
Dim fRangeLimitsArray() As Float
Dim bBrushStylesArray()...
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358
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PostGIS Unknown colormap keyword
I'm working with thematic maps with ST_ColorMap function smoothly until I try to create my own thematic map(colormap).
WITH
canvas AS (
SELECT ST_Raster(
ST_SetSRID(ST_Extent(...
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151
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Appropriate reference system for small-scale mapping of the Middle East [duplicate]
I want to create a thematic map of the Middle East that displays certain historic places and regions on a small-scale map (between 1:6.000.0000 and 1:12.000.000). The map has to center the boundary ...
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1
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93
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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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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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550
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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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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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