The study and practice of making maps.

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13
votes
3answers
4k views

How to speed-up Dynamic Map services?

I am working on a ESRI Flex based application that will display data from a Dynamic Map Service. It need to be Dynamic, since the end user should have the option to turn on & off layers. This is ...
3
votes
2answers
282 views

Segmentation Fault (segfault) when using OGR CreateField() in Python

Receiving a segfault when running this very short script in Ubuntu. from osgeo import ogr, osr shpfile = 'Census_County_TIGER00_IN.shp' def cust_field(field): '''cust_field(shpfile, field) ...
3
votes
2answers
241 views

Is it possible to sync the extents of two open mxds?

I've never seen it, and it's not vital, but I'm wondering if anyone knows of a way to sync the extents of two open mxds? I'm pulling an old ims service into one mxd, and have another mxd open that i ...
11
votes
7answers
2k views

Color palette conventions

I wonder if there is a "unified" source for map color conventions, that GIS map builders are encouraged to follow? EDIT To clear up my question a bit. I'm more interested in the color <-with ...
4
votes
4answers
783 views

Examples of Beautiful Maps (at a county level or closer)

The Examples of Beautiful Maps question was outstanding and it gave us some great results. I was wondering if anyone else had similar examples, but at a county or parcel level. At those levels, I ...
21
votes
9answers
3k views

Are North Arrows Pointless?

A recent post on Cartastrophe refers to a "Worldwide Campaign to Eliminate Needless North Arrows." So when, if ever, are North arrows necessary? As an interesting aside the concept of North being ...
80
votes
13answers
4k views

How to account for Colour Blindness when designing maps?

Depending on what you read, 7 to 15% of the general population has some form of colour blindness. That's a significant amount of people. Do you try to account for this in your map designs? If so, how? ...
11
votes
7answers
1k views

How to implement value-by-alpha map in GIS?

I've been doing some background reading about cartograms recently and stumbled upon interesting alternative - value-by-alpha maps. Concept is described in more details here and full paper is ...
7
votes
2answers
1k views

Is it possible to emulate “Swiss style” shaded relief with ArcGIS tools?

Is there a way to create a Swiss style (or other hand-shaded-like styles) shaded relief from a dem using ArcGIS tools alone?
3
votes
1answer
186 views

Is there a standard for displaying US vs. State highways on map?

My question is whether anyone is aware of a standard for how State roads, US roads and interstates should be displayed on a map? Not the label, but standards for the color and width of the symbology ...
8
votes
2answers
1k views

How do I combine high resolution and generalized hillshade rasters to produce enhanced shaded relief?

I often add LiDAR data to a map along with a shaded relief. Most of the time i have to generalize the LiDAR dem depending on the scale of the map. Still, there is often too much detail and mountain ...
5
votes
1answer
3k views

Are there any good alternatives to the Maplex (ESRI) labeling engine?

I am running ArcGIS 10 (ArcView) with the standard labeling engine. I am very familiar with Maplex and have used it in the past but it still lacked the "feature-linked" functionality given the type of ...
1
vote
1answer
186 views

How do I resolve line outlines jutting into other lines in Mapnik/Cascadenik

We are designing a basemap, and I am trying to resolve a problem with outlines that comes up in roads. The idea is to have lighter colors roads, but they don't get pushed out far enough with our light ...
19
votes
10answers
3k views

Discontinuous or Interrupted map projections?

Do any of the current open source GIS softwares support discontinous projection systems? E.g. sinusoidal, dymaxion, butterfly, etc? If not, are there any affordable commercial ones that do (affordable ...
11
votes
6answers
1k views

Are there any convenient sources of color palettes to use in ArcGIS software while producing maps?

Are there any convenient sources of color palettes to use in ArcGIS software while producing maps?
16
votes
5answers
2k views

Rendering overlapping lines

I am making a map containing information about public transportation: busses, trams, etc. The map will have a layer containing for example the tram lines. Each line has its own colour, and is ...
7
votes
2answers
201 views

What are “M” point locations on the NOAA forcecast cone map?

I don't think I've ever noticed M before. H and S are Hurricane and Tropical Storm.
3
votes
3answers
2k views

Is there a way to “disperse markers” across multiple point layers?

I have a bunch of point layers which often have overlapping features. The disperse markers geoprocessing tool works within a layer but is there a way to do it across more than one layer, so none of ...
25
votes
14answers
3k 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?
4
votes
6answers
1k views

flex/AIR based SLD generator?

Styling layers in GeoServer can be tedious to say the least. While Styler can relieve some of that tedium, it doesn't yet work in chrome. It can wreck existing styles if not carefully used and still ...
4
votes
1answer
3k views

Placing all labels in ArcMap non-overlapped by extending arrow/line from label to point? [duplicate]

I was wondering if there is a way to place all labels on a map non overlapping, but by extending an arrow/line from the label to the point. I've tried the call out box, but I couldn't find a way to ...