The study and practice of making maps.

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2 views

Algorithms + additional information

I would like to know where i could find information or some instructions for algorithms. For example algorithms to calculate routes between cities or to optimize the way a route is calculated when you ...
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3answers
331 views

Show “layer name” as text in arcgis layout view (map)

I am trying to show the layer names of all visible layers in ArcGis 10.1 when creating a map in layout view. First I tried to use "insert legend" and show there only the layername, but I can't ...
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1answer
16 views

How to select a line from a osm shape by osm_id

I'm using TileMill to make a map, but I can't seem to be able to format a specific item with a specific osm_id via mss. I have a shape file added as a layer #line: Then, in the features list of ...
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0answers
17 views

GRID in MapInfo

I just want to ask for assistance how to create Grid thematic map in map info. I have 5 different points.with different color code. kindly please give the step by step. and im using Map Info.12. ...
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2answers
38 views

Can CartoDB read data that are hosted locally?

Can CartoDB read from tables/data hosted on a local machine and not necessarily uploaded to CartoDB's website?
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1answer
8 views

Disable Mobile Canvas

Is it possible to disable the mobile canvas in CartoDB when using the embedded maps? When I add extra text to a legend and define the the width of it, the legend isn't displayed correctly on the ...
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0answers
15 views

Automatically creating index features for a strip map in QGIS

Is there a free/open source equivalent ArcGIS's Strip Map Index Features geoprocessing tool? I'd like to use QGIS's "Atlas" mapbook functionality, but creating the index layer manually would be ...
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2answers
69 views

Looking for guidance to create a hydrological map with QGIS and/or GRASS

I have QGIS and GRASS installed . Basically i need this program for making maps something like this: https://www.youtube.com/watch?v=5HuPX7JS7ZA I downloaded DEM from ...
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0answers
10 views

Generating Layercube Format

If not using CartoDB to host your data, how can we modify the input parameters to point toward a layercube file,, and how to generate that file?
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2answers
5k views

How do I overlay a KML on leaflet 0.4.4

I am using Leaflet 0.4.4, I have a KML I would like to overlay on the map, how do I go about doing this? Edit: I am already aware of https://github.com/CloudMade/Leaflet/issues/14, which directs ...
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0answers
48 views

How to create shape file and show in map using Python?

I have calculated distance between longitude and latitude by import .csv using python. Now I want to show this points or distance between points in map. So how can i do it by using only python? and ...
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1answer
38 views

Print Selected Area in Map in Arcgis javascript API

I'm working on arcgis javascript api, and I'm trying to implement a selection print tool, I'm new to this api, and don't know how to select area of the map, and after that, print the selected drawn ...
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2answers
69 views

Resources for Learning 508 Compliance/Accessibility Requirements for GIS Figures

Does anyone know of any quality resources (books, papers, presentations, websites) for learning about 508 Compliance/Accessibility requirements in relation to cartography (GIS figures and templates)? ...
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1answer
48 views

Is it possible to draw a 3D Choropleth Map in ArcGIS?

What I have in mind is something like these two examples below: Also, if it is not possible to create a 3D choropleth map in ArcGIS, is there some other GIS software package that can draw 3D ...
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4answers
1k views

Is there a name for deformation-based maps?

I have already seen maps using deformation to visualize information. For example, this map shows temporal distance between some French cities when traveling by train: Is there a name for this kind ...
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0answers
3 views

Using the “Propagate Displacment” Tool, to what degree are graphic conflicts solved

In our cartographic production process, we use the "Resolve Road Conflict" Tool to displace road features that have graphic conflicts. Next to the displaced roads this tool also creates Polygons as ...
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6answers
273 views

What are good colour schemes for large density flow maps?

I came across nice QGIS tutorial for mapping flows. In contrast to Alasdair, I have zero talent in colour choice. Can anybody recommend some good starting points for nice colour schemes (I'd be ...
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1answer
32 views

Where can I find road attribute and network for New York City?

Is there any possible to find the attribute of each road (such as road capacity, speed, longitude and latitude.) in New York City ? Thanks
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6answers
982 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?
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2answers
89 views

Creating Land Use Change Map in ArcGIS for Desktop?

I need to create a map with multiple dataframes showing the percent change in land use - one each for agriculture, developed, and forest. Percent change has to be labeled on each county and color ...
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4answers
363 views

Manually classifying graduated data outside of range in ArcGIS

I have two shapefiles representing grids with values that are symbolized with graduated colors, shown below: You can see that the two shapefiles encompass similar ranges of data, but assign ...
2
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1answer
35 views

How to export subset of data in QGIS to DXF

I have QGIS loaded with multiple layers. I want to save to .dxf but the map is so massive it results in a very large file. I only need a small portion of the map, so I was wondering how I can crop the ...
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2answers
84 views

How to build a map that highlights only one state?

I'm a journalist working on maps of several Alaska databases. I'm learning as I go and have a question that's probably very basic, but very important for my projects: Using CartoDB, how can I create ...
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1answer
103 views

Calculating distance between latitude and longitude by using python

I have a database of 2000 points, which is in csv format of latitude and longitude. I want to find distance between these points all at once. And also showing these points in Map by using only pyQGIS. ...
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1answer
136 views

Hover effects using CartoCSS: Is this possible?

I'm trying to make a simple map of parcels in TileMill. Right now when I hover over a parcel, the information for that parcel appears in a teaser. That's simple enough. However, when working with ...
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1answer
202 views

mapbox layer in ESRI API

I am building an application primarily with the ESRI API, but would like to load a mapbox tilelayer to use as the basemap as they are just so much more pleasing cartographically. I dont want to change ...
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1answer
35 views

Poster or Map Presentation Guidelines?

Is there a website that will guide me through for various kind of paper size to create a/ or several presentation for digital or hardcopy maps/ or poster with different fonts, display area, title and ...
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0answers
73 views

How to import a map consisting of pictures

I want to built some sort of Fantasy Map with Quantum GIS. The whole map is built out of 128x128 single pictures, 16384 in total. It should be a flat map. How do I import these pictures and align ...
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2answers
237 views

How to plot lat/long stored as text in Oracle DB using report builder/SSRS r2

We use an Oracle 10g database. However we write reports using SSRS or report builder, using the Oracle connection type to the datbase. In oracle we have 2 text fields, one for lat and one for long. ...
2
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1answer
147 views

MapServer Pixmap Symbol GAP for Park Polygon Layer

I have a Polygon layer (National Park) PNG Pixmap symbol (from Maki icon set) MapServer 5.6 If I use the PNG Pixmap symbol for my Polygon Layer, Mapserver fills the polygon layer with the png ...
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0answers
32 views

georeference a grid by using a script

I've got an image and a set of coordinates, which represent a grid, that looks similar to this: What I'm looking for is a script, that would transform my image, by using such a grid. Edit: My ...
10
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2answers
730 views

How to create a transparent box in the map layout?

Is there a way to create a transparent box in the ArcGIS layout view similar to the one in the screenshot? I have tried without success adding a transparent box by inserting a neatline, adding a new ...
3
votes
3answers
6k views

Can't change Data Frame display units in ArcMap 10

Last week, I went to View -> Data Frame Properties... -> General tab to change the data frame map display units from Decimal Degrees to Degrees Decimal Minutes. (the Map Units were still in Decimal ...
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0answers
92 views

QGIS 2.4.0-Chugiak: How to threshold NDVI to calculate emissivity for land surface temperature

I am analysing urban heat island using thermal band 6 of landsat TM-5 sensor with respect to Normalized difference vegetation index that derived from the Band 3(Red) and Band 4(NIR). Lansat TM years ...
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1answer
241 views

Data Frame Property options have changed

I have Googled and searched ESRI help files and experimented until I am blue, not to mention reloading ArcGIS Desktop10 for Repair and adding the SP5 to it. I no longer have the options of border or ...
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1answer
9 views

Why my map just grayscale mode after use MRT?

i just follow the step to change .hdf file to geotiff file from this site http://duncanjg.wordpress.com/2012/12/11/loading-modis-ndvi-time-series-into-postgis-raster/#comment-1214 and i use data from ...
10
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2answers
916 views

How to cartographically represent water flow?

I am modelling water flow on steep slopes for an erosion study. You can see from the screenshot the results from the ArcGIS-based flow analysis. To produce these flow lines, I generated a ...
1
vote
1answer
196 views

How can I map data points to OpenStreetMap (OSM) line data?

my goal is to filter measuring points of vehicles by mapping them to streets. So I could filter out all the false data located in fields and rivers and so on. I imported my data into a PostGIS ...
2
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1answer
263 views

Altering graticule intervals logically in varying map scales using ArcPy and/or Data Driven Pages?

This question appears on many sites and I was wondering if there was a script that is now available that resolves it? Please also upvote the ArcGIS Idea that Reference grids/graticules should be ...
4
votes
1answer
123 views

Sourcing GIS data from First World War (WW1)?

Simple question, but does anyone know where I can get some detailed (eg 1:10m scale) vector data from the First World War? I've been through the archives here, but it seems the best sites for it ...
1
vote
1answer
27 views

GeoServer Label Placement - Place Always Inside Polygon

Is there a way within the SLD to ensure that the label always appears within the polygon? For example, in odd shaped polygons (with a hole, or a horseshoe shape) my labels are sitting outside. I'd ...
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0answers
23 views

Appropriate reference system for small-scale mapping of the Middle East

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 ...
20
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1answer
2k views

Making world map to show where hole drilled through centre of Earth starts/ends on land vs water?

I am discussing drilling through the Earth with my students. The classic cartoon version has a person drilling down in the United States and coming up in China, which has to be wrong because drilling ...
2
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2answers
40 views

Best sites to create a collaborative map?

I need to suggest a tool to build a map together, ie. let multiple users add POIs and routes on a map. I know about OSM-based Umap but are there other online tools I should know about?
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0answers
36 views

Trying to make a depth map of a lake but can't get the contours to show up right

I am trying to make a depth map of a lake. I am using the contour plugin to generate contour lines. The problem I am having is that when I use the plugin the contours come out right except on the ...
2
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2answers
37 views

Formula for charting a course around the globe, given a location and degree heading?

I'm looking for a formula that takes a long/lat coordinate and a degree heading, (e.g. "I'm standing in San Francisco and I'm facing 45º from north"), and which can draw a line across a map projecting ...
4
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1answer
56 views

How to create a map colored by distance to nearest point in R

I'm new to GIS and R-- hope this question makes sense. I have a dataframe(geo07) containing two variables that record the long/lat values for about 6000 points (mat_long & mat_lat). These ...
6
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2answers
178 views

Geo-referencing an old map

I'm trying to georeference this part of an old map of Indochina. . The full extent gives more information: . To do so, I used QGIS and tried to infere the datum, I tried "Unknown datum based on ...
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1answer
12 views

setting Arcgis world imagery as data source for a mosaic data set

I have created a mosaic data set and want to set esri world imagery basemap as my data source but i am unable to connect to the server can anyone help
3
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2answers
161 views

cartodb.js highlight the polygons on mouse hover for Google map v3

We are using cartodb.js with Google map v3. We are trying to highlight the polygons on mouse-hover. Is there a way to highlight the polygon on Google map using cartodb layer?