The study and practice of making maps.

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1
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0answers
69 views

Creating Legends for QGIS 2.0 Feature Blend Mode Outputs

I am working on visualizing ~4100 buffered point features. The shading of the buffers is keyed to a field in the data. Because the buffers overlap, I turned on multiply in the new feature blend mode ...
4
votes
3answers
278 views

How to improve cartography by processing map exports with GIMP?

I am about to make a map with a heavy emphasis on cartography. I would really like to spice it up by processing the image in GIMP and I was wondering if anyone had any tips for bringing the ...
13
votes
2answers
818 views

Polygon gradient fills / tint bands in QGIS

Is it possible to use a gradient fill on a polygon in QGIS? I would like to have my polygons with a colour at the edges, fading to clear/white as it moves away from the edge. The majority of the ...
1
vote
1answer
98 views

PostGIS ST_MapAlgebra Assistance

I would like to perform the equivalent of the below ArcGIS raster calculator equation in PostGIS using the ST_MapAlgebra function and return it as a tif using ST_AsTIFF. Con(("Sol_gain_clipped.tif" ...
4
votes
2answers
875 views

I need help with saving Graphics to the a map

I have everything working just like I need it to, but when I add a new graphic to the map it does not save it. So I will add it, close the application, and when I reopen it the graphic is gone. I have ...
0
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0answers
77 views

Legend in FlexViewer - Only show classes that are visible in the current map extent

I am using ArcGIS Viewer for Flex to create web map. The legend widget can be set so that the legend in web map to only show layers that are available at the current map scale. This is great but I ...
9
votes
2answers
410 views

Can I sell maps to third parties if I have Google Earth Pro License?

Not sure if this question is suitable for SE but I can't find answers anywhere else. I work as a GIS Analyst for a mining company that has its own GEPro license. As part of my job, I make PDF maps, ...
4
votes
1answer
148 views

How to write labels with varying significant figures/decimal places?

I have results that range from ex. 113,009 down to 0.00495 - Can someone recommend a way to write/construct a label expression for the following in ArcMap: • If less than 1, use 2 decimal places ...
0
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0answers
154 views

offline OpenLayers with MapQuest not showing (openlayers asking wrong tile names/zooms

i´m beginning on GIS, trying to show maps offline, from the disk. I got the tiles from MapQuest, level 6 to 12. I´m trying to show them with OpenLayers but it´s only showing empty rectangles. ...
1
vote
1answer
51 views

How to create a value-by-alpha map in Java?

Someone has post similar question as mine before : similar question But my objective is slightly different. I have a shape file (.shp) (a country map) I would like to write a piece of java code to ...
1
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0answers
77 views

Learning classical geography - recommended literature et.c

I've been working in the field of GIS for a few years now, and there are some disciplines of knowledge where I lack a good degree of education. My educational background is that I've studied computer ...
10
votes
5answers
486 views

Where can I find a high quality real globe of a decent size without axis?

I'm trying to find a physical globe of a high map quality that doesn't have any axis or bearings as the axis mounted on standard desk globes completely obscures the arctic regions. High-quality map ...
5
votes
1answer
3k views

R : convert a spatial polygon objet to spatial polygon data frame

My goal is to modify an existing shapefile by merging certain polygons. After importing the shapefile and using the UnionSpatialPolygons command, I get the polygon outline that I want. However, this ...
-2
votes
1answer
70 views

Buffer is giving me a different distance [closed]

I'm using ArcGIS 10.1. When I Buffered I changed the environments to compare the two different projections. WyLAM is a statewide Lambert Conformal Conic projection used for Wyoming. State plane in ...
0
votes
0answers
22 views

How can I add Raster Map as permanent layer òr Level to Microstation .DGN file

Hei Am having Raster Map and would like to visualize permanently whenever the DGN Opens , I dont wish to attach them as reference in Raster Manager but rather save it as one of the Level in ...
2
votes
1answer
150 views

Openlayer map not loading

Just another OpenLayers problem Plugin is installed correctly but when I add a layer I get following message. (CRS is on Pseudo mercator) Can anyone help me out? An error has occurred while ...
1
vote
2answers
144 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 ...
1
vote
1answer
135 views

How to get a list of map scales programmatically in ArcMap?

I need to get all map scales, which are shown in the ArcMap scalebar. I need list of value, something like: 1:1500 1:3000 1:6000 1:12000 1:24000 1:50000 1:100000 Does anyone know how to get it?
0
votes
2answers
281 views

Best way to create/draw a map (especially indoor)

I'm currently developing an indoor map/room plan for an university project. I've already searched through stackexchange to figure it out but I couldn't find anything similar. So what I currently do ...
2
votes
3answers
365 views

ArcGIS legend columns

I am making a legend in ArcGIS 10, and have a few layers with a large number of classes. When I try to display the legend with two columns for that layer, the second layer always lines up with the ...
3
votes
3answers
158 views

Open Street Map: converting to country -> administrative unit -> city database

To moderators: If you think this question is too broad, please point me into right direction before closing, I'm desperately looking for help. I'm stuck on my task and I don't know what to do. The ...
0
votes
2answers
90 views

How can you insert a custom symbol?

How can you use a custom symbol for either dot density or proportional symbol maps in QGIS? Is there a way to import a symbol of your own such as a drawing or image that you can create or download ...
1
vote
0answers
80 views

Is it possible to use USGS .shd files in QGIS?

Has anyone successfully used QGIS with US Geological Survey shd files to map geology - specifically to display colors and geological symbols (dip/strike etc) stored in a USGS supplied shd file. ...
8
votes
1answer
223 views

Help choosing most suitable bivariate choropleth mapping coloring scheme

I am trying to overlay a nominal variable (2 categories - rainfed vs irrigated) in a choropleth map over a numeric variable. In order to highlight the difference in pattern among the two ...
3
votes
1answer
115 views

How to prepare automatic text labelling for legend using arcmap?

I need to label for text with legend without ungrouping layers. I have attached an example image to show the expected output model I am looking for your guidance. Thanks in advance.
26
votes
4answers
2k views

How to use directional shading on boundaries for cartographic effect?

The attached screenshot of a National Geographic map shows some beautiful directional shading of boundaries. I'm trying to reproduce this sort of shading for a burn perimeter map, as I want to ...
0
votes
0answers
81 views

Exporting from ArcGIS 10.2 to PDF for editing in Inkscape-Where are the layers?

I'm trying to export a simple street map with markers from ArcGIS 10.2 to PDF for editing in Inkspace (Note: I've tried this with exports to .ai and SVG as well with results similar to those recounted ...
1
vote
1answer
232 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
2answers
136 views

What is a good Javascript API for weather data?

I'm looking for a good javascript api which gives access to a weather data-base. I want to extract information like average number of rain days, amount of sunshine and average temperature. Is there ...
0
votes
1answer
29 views

European route E4 in geodata format

Good morning, Has anybody locate any kml, shp or gpx file with the complete European trail E4 ? Lots of google search navigates me to nowhere ... Dimitris
6
votes
3answers
357 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 ...
3
votes
1answer
114 views

Which projection is being used in this figure?

I would like to use the projection being used in this figure. Does anyone know which one it is? Esp helpful if it is available in ArcGIS. From plant stress page thanks!
155
votes
48answers
38k views

What Makes a Map Beautiful?

Often times when we make maps it is based on our subjective interpretation of what is aesthetically pleasing. I would like if people posted examples of beautiful maps, displaying any phenomena in any ...
1
vote
1answer
81 views

How to create themed layer based on a list of geometries and specific risk values in Sharpmap

I am now using SharpMap for creating a network-based tool. By using SharpMap, for constructing network, the current functions in SharpMap enables the tool to capture coordinate on background layer and ...
16
votes
1answer
330 views

What do these curly graphics represent on this map?

What do the two curly graphics to the left and right of this map represent? They are the only two on the map and seem to be attached to the border of an area. I'm sorry I haven't posted the full ...
2
votes
2answers
453 views

Why do I get different output from gdal2tiles vs. maptiler?

I am trying to generate map tiles using gdal2tiles for an area much larger than MapTiler can handle. However, my tile caches are not showing up on the maps. I checked gdal2tiles by running the same ...
3
votes
2answers
1k views

Can QGIS automatically load an SLD with a Shapefile?

I have SLD's/lyr files with my shp/gdb files. They all have the same name except for the extension. Is it possible for me to force qgis to load the sld with the shp so that I don't need to manually go ...
11
votes
7answers
3k views

How to obtain overlapping semi-transparent circles effect?

I have been trying to obtain the following markers effect. How can I do the same in ArcGIS (or any free software)? This image is from a book.
0
votes
0answers
34 views

getting Intersections and streets from map

Am new to GIS and maps , but am working on a research concerning traffic analysis and I want to get the Intersections as nodes and the connecting streets as edges , what source could I find these data ...
3
votes
1answer
198 views

Export ArcMap cartographic representation to a symbol?

Using Cartographic Representation (CR) I've created a nice feature symbol with a filled interior and sharp outline. It looks great on a map, on screen and printed. However I can't duplicate that ...
2
votes
1answer
131 views

How to make Properties > Change Symbol > Symbol Selector > Edit Symbol dialog loading faster?

Is there any way to tweak ArcMap to make the loading of the Symbol Selector and Symbol Editor dialogs faster? I have a lot of symbols in my style files and I want to keep it that way since it is ...
2
votes
1answer
161 views

Cartographic Representation: how to use different rule for different polygon?

I create a file geodatabase to hold a polygon of the land boundary. What I would like to set up the RULE to separate colors. I had to split the polygons into 2 separate polygons and change the ID to ...
2
votes
2answers
77 views

Measure areas, lenghts in specific regions (Australia, Sout East Asia)

I'm in need to find a suitable projections to measure correctly areas and lenghts for 2 areas of interest. I want to measure both factors for: 1) First region Australia & New Zealand (1st ...
9
votes
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 ...
2
votes
1answer
48 views

Is there demand for a service to publish web maps with lots of shapes? [closed]

Is anyone in the GIS community trying to publish choropleth web maps with a large (10s to 100s of thousands) number of polygons? and if so what's your current approach and what are the shortcomings of ...
5
votes
2answers
162 views

Which true type editor do you use to create/modify point symbols for GIS?

Which true type editor do you use to create/modify point symbols for GIS and what are the advantages and disadvantages of the tool? I am looking for a true type editor to create/modify custom point ...
24
votes
13answers
2k views

Good websites for map-lovers?

Do you know some good websites for map-lovers? I often visit strange-maps, cool-maps, makingmaps and hipkiss.org. Do you know others?
0
votes
1answer
46 views

How to use the Cartographic Composer of GRASS 6.4.3?

Following on from my previous question (which was, again, how to use the Cartographic Composer)... I've got a GIS in GRASS. I need to print various bits of it. Problem is, it needs images on it ...
8
votes
4answers
2k views

R spplot tutorials

I'm in need of some tutorials/books/other training materials which cover how to use the spplot function in the sp package in R properly. As with many of these functions, it seems very powerful, but ...
0
votes
0answers
61 views

Moving a Google Map Marker on a Mac

I have exact lat & long coordinates that I will enter and hit return in Google maps. When I do this it displays this point with a green marker on the map but I can not move this marker. I want to ...