The study and practice of making maps.

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2
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1answer
160 views

Constructing simple zip code polygon map in CartoDB?

I'm new to using CartoDB. I want to produce a map that depicts multiple layers, the first of which is simple zip code polygons (i.e. polygons outlining an area defined by a postal zip code). I ...
1
vote
1answer
35 views

R: Krovak projection in R - identical in ArcGIS, different in R?

I have two files: shapefile and raster, both in the same coordinate system in ArcGIS: EPSG 5514. Check information on projection in ArcGIS for raster: S-JTSK_Krovak_East_North WKID: 5514 Authority: ...
-4
votes
1answer
59 views

Help with definition query [closed]

I have a layer of 5ft contour lines, and it includes a field called "Elevation" that has the elevation of that particular line in feet, (ex: 1555, 1560, 1565 etc.). I want to only show lines for every ...
2
votes
0answers
56 views

Set NaN values to Transparent in Matlab 'geoshow' function?

I am trying to plot rainfall values in MATLAB using geoshow function. NaN values should be transparent in the map. However, the plot I am getting comes with dark blue color for NaN values. I have ...
1
vote
0answers
21 views

Suitable font size for road network for A0 -A1 print size QGIS

I need to print big paper maps, Im using QGIS to design my maps. But I would like to get advice on suitable front size for road names. With the map as big as A0 I can basically fit all text labels for ...
7
votes
1answer
172 views

Is it possible to create a round map frame in QGIS Map Composer to create circumpolar maps?

Does anybody know if it's possible to create a round map frame in QGIS Map Composer to create circumpolar maps?
12
votes
4answers
654 views

How is margin of error reported on a map?

When reporting estimates you should always include the margin of error. There are conventional ways of reporting margin of error in a table, text or graph. But, how do you report margin of error for ...
10
votes
4answers
570 views

Examples of geospatial scientific posters

Can you point me to examples of interesting scientific posters featuring results of geospatial analysis and/or geovisualizations?
5
votes
1answer
122 views

How does one style the border to match the fill in QGIS?

In the past I have just manually matched the color of the border to the color of the fill, but this can be time consuming. I am wondering, is there any way to have the program automatically match ...
0
votes
0answers
47 views

north arrow outside map

I am plotting 5 maps using spplot having a 2*3 layout. The space not used for maps should contain cartographic features such as a north arrow. Could someone guid me in the right direction? I know how ...
7
votes
1answer
177 views

How to decrease the distance between legend's items in R?

I'm trying to create correct choropleth() map in R using GISTools package. I use choro.legend() to display my legend. However I can't create either correct legend placement, AND/OR I don't understand ...
3
votes
2answers
49 views

Is it possible to add subscripts or superscripts into a legend?

I have a population density map where I'm showing the amount of people per square kilometer. In order to make it more visually appealing I want to show something like: [any symbol here] - 2.00 - 5....
3
votes
1answer
33 views

Displaying quantitative data in choropleth legend?

I have always struggled to come up with a great solution to handle choropleth or any other quantitative interval or dataset classifications in a map legend where the numbers are sequential. For ...
0
votes
0answers
25 views

How to generate map image using OpenLayers?

I have a solution, which displays maps on a client using OpenLayers API. Now, I received a request to pre-generate the same maps as images on the server - so a standard web client shouldn't be ...
3
votes
2answers
153 views

Plot tilted map in R

I would like to plot a tilted map, similar to the image below. I would prefer to do this using ggplot2 but I'm glad if there is a solution using base R. Any ideas on how to do this? Here is a dataset ...
0
votes
2answers
71 views

How to check my EPSG and units in R when it is not defined in proj4string?

After reading my .shp in R using readOGR(), I tried to figure out what is my EPSG and what are my units in my projections? when I tape my.shp = readOGR(dsn=setwd(dsn = dsn, my....
3
votes
1answer
49 views

How to get latitude and longitude of Point plotted on the map using mapbox

How can I retrieve longitude and latitude of Point plotted on map ? I am testing one website in which I need to verify longitude and latitude of Point plotted on the map. Map has been developed using ...
1
vote
1answer
35 views

Conditional styling in FME ChartGenerator

A vector data set represents different wilderness qualities of district areas (V, 1 and 2) and one human activity zone (N). Our cartography for the areas gives us the following map: I am using FME ...
4
votes
2answers
54 views

How to resize the Legend Item Wndow in Map Composer?

I am just wondering if there is any simple way (no messing with codes) to adjust this Legend Item Window in Map Composer. I am using QGIS 2.14 in windows 8. A much larger (taller) window would really ...
1
vote
1answer
430 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" &...
5
votes
3answers
2k views

How to create transparent text?

I am trying to insert a watermark into a map using ArcGIS. As you can see from the screenshot, I have the text in place, although I need to make the text transparent (e.g. 50% transparency). I used "...
0
votes
0answers
26 views

Free Basemaps for use in Print Publication

I am looking for free-to-use simple maps that show just the largest cities, region names, country names etc. with a simple background. I need about 500 of these for the major cities/countries of the ...
0
votes
0answers
16 views

Guideline on how to reference units and intervals in the legend

I often use some kind of elevation data in my maps in form of grids and contours. I never really put much attention to how to properly specify units and intervals in the legend but now polishing my ...
1
vote
1answer
33 views

ESRI Story Maps | Usage in large-scale maps/plans

If there´s a possibility to adjust the scale of the basemap to plan-like maps. Thing is, that i´ve got a map/plan of a greenhouse and i wanna make a "guide" through this greenhouse to show some rare ...
2
votes
3answers
165 views

Hiding Overlapping Lines in ArcMap?

I am trying to figure out the best solution to hide overlapping lines. I have a layer of polygons representing crustal plates. I have a polyline layer of fault lines that overlap some of the polygon ...
1
vote
1answer
54 views

Finding and loading global population density raster data into R?

I am using the Bioclim dataset for a maxent project right now, but I want to add demographic predictors along with climatic ones. I have the 19 layer raster data from Bioclim and I'm hoping to use the ...
19
votes
4answers
2k views

Making map where overlapping symbols increase Opacity?

I was looking at some maps like: Map from Ship Logs or the Facebook worldwide friendships Mapped (via the Flowing Data blog) These Maps look good because single lines are almost transparent, and ...
3
votes
2answers
4k views

How to make a raster layer transparent via MapServer

I loaded a PostGIS raster Data through OpenLayer and Mapserver. The code inside the OpenLayer is as following : localWMS = new OpenLayers.Layer.WMS( "Local WMS layers", "http://...
28
votes
9answers
4k 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?
18
votes
4answers
5k views

What is a good resource for learning to hand draw a map?

I've been wanting to go old school & draw some maps by hand... Something like you might see on the first page of an adventure novel. I've found next to nothing on the web and am hoping that one of ...
0
votes
1answer
44 views

Are there any crowdsourced hand-drawn cartography projects?

I just came across this lovely hand-drawn, yet OpenLayers-enabled, map of Reykjavik: http://www.reykjavikcentermap.com/ It's obviously a labour of love for some talented artist, but it got me ...
4
votes
1answer
80 views

How to match symbology between two layers

I have two point layers: one shows the number of people in a county, the other shows the number of people who receive a particular service in that county. I am symbolizing them both as "proportional ...
1
vote
1answer
1k views

Using OpenLayers 3 Feature onclick event?

I looked for a way to fire onclick event and I found Adding event handler to feature in OpenLayers 3? at Stack Overflow. I undestand from this question is that there is no event onclick to features. ...
4
votes
5answers
173 views

How to visualize point accuracy with buffers in QGIS?

I have a CSV file that contains 3 columns - Lat, Long, and Accuracy. The Lat and Long fields contain point data in decimal format. The Accuracy fields contain a numeric values that indicate the ...
4
votes
2answers
77 views

Arcpy mapping text element reset

I am writing a script to create thousands of maps and I am trying to create a table that updates for every map. Basically an updating table of the information specific to each map. I have been trying ...
2
votes
1answer
98 views

Leaflet marker is not displaying

I am currently having slight problem on displaying marker in the leaflet. I have used the following codes on displaying marker and map, however the map is displaying flawlessly but the marker is ...
2
votes
1answer
333 views

QGIS Map Composer goes blank, outputs corrupt PDF

I am using 64bit 2.10.1-Pisa on Windows 10. When I set up my composer to print, everything looks fine until I try to print or export. The composer goes completely blank and outputs a corrupted PDF ...
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 ...
16
votes
1answer
5k views

How to represent overlapping lines in ArcGIS for Desktop? [duplicate]

I have lots of lines (in one feature class) which share the same location but I want to represent them as lines that are next to each other because they have different properties (different OWNERS). ...
14
votes
8answers
4k views

How to obtain overlapping semi-transparent circles effect in ArcGIS for Desktop?

I have been trying to obtain the following markers effect. How can I do the same in ArcGIS? This image is from a book.
8
votes
1answer
218 views

Group and align icons in QGIS atlas

I am making an atlas of protected areas using QGIS. I am using version 2.12, but this question will probably also apply to version 2.14 as well. Several points of interest (poi) objects are presented ...
1
vote
0answers
15 views

How to control layer visibility in the Map Composer Overview map? [duplicate]

I wonder if it is possible to choose which layers would be visible in the Overview Map loaded in the Map Composer. Note that this is already possible for the Overview Panel in the QGIS Desktop: for ...
0
votes
1answer
289 views

Why do Web ADF Map and MapResourceManager maintain their state in session this way?

I'm using ArcGIS Server Local datasource. ArcGIS Web ADF MapResourceManager control maintains resources added once until session is abandoned. Why does it do so? Why not just use viewstate? Map ...
1
vote
0answers
38 views

Loading USGS 1:24,000 quads into Garmin GPS-receiver — how to convert to a kmz Garmin understands?

I have downloaded USGS 1:24,000 topos (the classic one, not the useless US Topo) from the USGS Map Locator & Downloader. How can I load those into my Garmin GPSmap? Following advice at this ...
30
votes
3answers
6k views

How to hide “internal” polygon boundaries?

Our task is to draw a lake with a solid outer perimeter line and no lines between internal wetlands, shoals and shallows? 'Tis a relatively straightforward process with Arcinfo coverages and Regions, ...
1
vote
2answers
66 views

ESRI ArcMap Legend Formatting

Is there a way in ArcMap Legend Properties to make the legend above look like the picture below?
4
votes
2answers
46 views

How to make a fixed block of text in cartodb instead of infowindows?

I started to use CartoDB today for a school project, it is here : https://elenab.cartodb.com/viz/3c08e76a-ec4a-11e5-8d14-0ecfd53eb7d3/public_map But what I would like to do is to have a block of text ...
1
vote
2answers
127 views

Reordering Category Layers in QGIS

I was wondering if there is a way to reorganize the layers when applying a style based on a categorizing value? I have many values, but I would like to rearrange them alphabetically. In ArcMap there ...
1
vote
0answers
9 views

from/to ellipsode to/from cartesian conversion

i am trying to convert from/to ellipsoidal coordinates (lat,lng,alt) to/from cartesian(x,y,z) i wrote the below code to do the conversion, but given the initial values of the gpsLat and gpsLng i ...
1
vote
0answers
34 views

Custom labels - aligned to rectangular objects, in a specific position and with multiple attributes using Mapinfo?

Can the following be done in Mapinfo? It should be formula based without manual formatting as performed by my predecessor to get the following output. So Grave_No on right parallel to the y axis ...