The study and practice of making maps.

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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 ...
3
votes
2answers
414 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 ...
3
votes
0answers
1k views

Converting projected coordinates to google maps pixels

I have a single polygon in a local projection system. I would like to convert that polygon into an image that can be used as an overlay on google maps. I understand that it may be better to use ...
3
votes
1answer
392 views

Is there an international standard with GIS symbols for power distribution objects?

Like I said in title, Im wondering if there is a standard that points out symbols for power distribution objects, power plants etc... Thanks
3
votes
2answers
243 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 ...
2
votes
1answer
57 views

Align Symbol to Line

I'm using ArcGIS 10.0 - ArcInfo license. I'm a fairly new user. I'd like to align rectangular symbols perpendicular to to the lines that reside nearby. I have two layers. A layer containing lines ...
2
votes
1answer
1k views

Calculating distance between latitude and longitude points using python

I have a database of 2000 points, which is in CSV format containing latitude and longitude. I want to find the distance between all these points, and then show these points in a map by using pyQGIS; I ...
2
votes
2answers
207 views

which map projection should be used for global map with geography and human demographics

I am working on a project to try to identify the most threatened populations (on a global scale) of having a limited access to freshwater. I want to compare those most at risk currently and then add ...
2
votes
2answers
435 views

How can I create a legend with the new data defined symbols functionality?

I have a large geology data set that I need to display using an industry standard set of symbols and colours. The symbols and colours are attributes of the data. I have been using the data defined ...
2
votes
1answer
668 views

Can I view the Geoserver zoom level in QGIS

I am creating some sld's using QGIS for use in Geoserver and wanted to view the current zoom level so that I can then define it in the zoom level. Is this possible? For example <!-- Local ...
2
votes
2answers
455 views

A library/software to create DEM from a topographic map

In one of my projects I need to digitize video clips showing some natural landscape. Specifically I need to know distances between different areas and elevation levels. I have a topographic map of ...
1
vote
1answer
68 views

Tilemill: Re-Export failed tiles after export

My Tilemill exports (MBTiles) tend to fail quite often lately... (Resume Tilemill MBTiles export after crash a bounty is waiting for anybody who helps me there btw ;-) ). We kind of solved the problem ...
1
vote
4answers
1k views

Cheaper solution for uploading maps to GPS (forestry maps: roads, trails, hydro, polygons)?

I'm using a QGIS 2.2.0 Valmiera on a Windows 8.1 system Desktop. I'm a forester and I would like to have a cheap solution to load maps into the handheld Garmin 60, 62 or 64 series GPS. Free would be ...
1
vote
2answers
998 views

Approach to creating a multivariate choropleth map with diverging color scheme(s)

We recently had primary elections in the community I serve. With the results having been released, there have been some requests for precinct level maps. Many of these primary elections featured more ...
1
vote
1answer
217 views

Including two different maps in one QGIS Print Composer

How do I use print composer in QGIS 2.0.1 to produce a final product with two different maps on the same sheet? I can't figure out how to use the 'add a map' button to add anything other than a ...
1
vote
1answer
386 views

Map missing in map composer and when I print map

I am new to QGIS and am probably missing something but when I set up a new composer and add a map to the page nothing appears. I have pressed the render button and the up date with no results. When I ...
0
votes
2answers
71 views

Pink Tiled Map with Openlayers and Geoserver

I'm having a problem with the pink tiles when trying to display a map. I'm using Geoserver 2.6 . In the main html page , I reference to Openlayers with : This is how I define my layer : new ...
0
votes
0answers
45 views

Raising height of a certain part of choropleth

I have a working choropleth map which shows number of patients in a certain coloured area. I want to raise the height of the specific area according to the patient count. The variable height is equal ...
0
votes
0answers
79 views

What is GIS for Indigenous Peoples?

I am working on a short course for a group of indigenous 10-15 year old children in a couple of weeks and want to start the program with a short intro (90s) of what GIS is and how it can help them. I ...
0
votes
1answer
100 views

Drawing roads with different widths

I'm drawing roads with different widths. The road data is constructed using GeoJson. (Each road is represented with a LineString.) When I draw the roads with almost the same width, a trivial, direct ...
0
votes
2answers
191 views

How to count record points within a given area (electoral district)? [duplicate]

New user to GIS and to QGis but experienced data user. I have shapefiles for a state legislative districts. I have a set of individual voter records that I have geocoded. What I'd like to do is ...
0
votes
1answer
2k views

Data Driven Pages and exporting PDF using Python [closed]

I am able to zoom into map_index shapefile rows for a group of mxd documents in layoutview and export zoomed record as a PDF document at the same time. I tried to combine below codes to make the ...
-1
votes
2answers
1k views

ArcPy gives error Object: CreateObject cannot open map document?

This should be a really simple process but I am having issues. I want to search a workspace for all files with a certain string and then add them to the current workspace with a selected symbology. ...
-2
votes
1answer
561 views

Making Map Matching Points to Roads [duplicate]

I'm having some trouble while map matching these points for some streets. Could you lend me a hand?