New answers tagged cartography
Maybe this video will help you. https://www.youtube.com/watch?v=Bp_UhSKH3NQ
Nice question! PyQGIS to the rescue! Follow these steps to get a new field (in your original layer) called label with the number of points that lie in the same location: Active (select) your layer in the QGIS ToC. Run this code snippet in the QGIS Python console: from PyQt4.QtCore import QVariant lyr = iface.activeLayer() # Create New Field ...
If I understand, you want aggregate a layer by location. You will need SQL for that, so create a virtual layer (Qgis >= 2.14) with a query like : SELECT geometry, count(*) AS count FROM your_layer GROUP BY geometry You can now use the "count" field of the virtual layer as label. For adding the filter by the text field : SELECT geometry, count(*) ...
you can use Rule-based labeling shapefile point before the rule all the points they label. after the rule: using rules you can specify which labels to show, even using conditional statements
You can use the heatmap option from the layer property. Just double click on the layers' name then on the dialog box select Style--->Heatmap This is my result:
Thee other option is to use a size assistant that is available for each of the data layer style. Say you categorized your point data based on color using a certain attribute. Simply right click each category and select Change Size. It should display a size dialog box. Then click on the expression filter and then select Size Assistant. The size assistant ...
You need to make a spatial points object and then reproject that: library(sp) library(maptools) data(wrld_simpl) wrld_simpl.trans <- spTransform(wrld_simpl, CRS = ("+proj=moll +lon_0=0 +x_0=0 +y_0=0")) plot(wrld_simpl.trans, col = 'lightgray')) latitudes <- c(-30, 0, 20, 50) longitudes <- c(-20, 10, 50, 80) Make an SPDF: pts <- ...
No problem for QGIS: Write the coordinates of both points in decimal degrees into a text file: Name East North Tokyo 139.75 35.6667 NewYork -73.96667 40.78333 Load the points file as delimited text Create a aeqd projection on one point using a sphere: +proj=aeqd +lat_0=40.78333 +lon_0=-73.96667 +x_0=0 +y_0=0 +a=6371000 +b=6371000 +units=m +no_defs ...
I dont see any problem with that.
At ArcGIS 10.3 (or even earlier probably) there are two useful tools for splitting up large complex polygons. DICE will cut up large polygons to make them draw faster and process quickly because a spatial index is more effective with smaller features. There is also a related tool CartographicPartitions which creates a grid for too many points in a ...
Navigate to arc toolbox Select cartography tools then data driven pages Select grid index features Select input feature Units for polygon width and height Click okay
towercoverage.com makes it simple. You can upload your .csv of the sites, create radio systems to add to the sites, and run actual RF propagation maps. It also has easy website integration with APIs for end user sign up and pre-qualification. The android app makes antenna alignment and path analysis simple for field technicians. We have added 22 languages ...
I recently had to do a similar map. The solution I came up with uses the rasterVis package, rather than ggplot2 (which is an awesome package, by the way). In my case, I had a map of trends over time (which is a numerical variable too) and also a map showing the significance of the trend (obtained from a statistical test). In my case, I wanted to plot the ...
I have a blog that there are interesting maps about a city of the Brazilian Amazon (Belém/PA) as well as many types of cartographic representation, articles with many maps about differents matters as: Violence, desflorestation, population, among others. If you want know, click here please http://geocartografiadigital.blogspot.com.br/. You can like and share. ...
Pretty simple. If your values are in 5 foot intervals and your elevation field is a numeric field, you can use a modulus query in the Definition Query to only show those records whose elevation value is even or odd. In your case, you're looking for even numbers. For a Personal Geodatabase, you'd use: [Elevation]/2 MOD 2 For Shapefiles or File ...
Looks like ESRI decided to define their own projection parameters: http://osgeo-org.1560.x6.nabble.com/Question-about-Krovak-projection-and-ESRI-XY-Plane-Rotation-parameter-td4291471.html There has also been some discussion on the GDAL list recently: http://comments.gmane.org/gmane.comp.gis.gdal.devel/42132 I suspect the raster package is applying some ...
May I add this website that ESRI has their Map Book Gallary. It has Online, Map Book archive ? Sometimes when I need something to look at, I usually go this site and to look at them. http://www.esri.com/mapmuseum There is another one not only for International but in United States as well.. http://icaci.org/
Maybe you can try to browse on FOSS4G conference pages. They usually have poster session, like this one FOSS4G Europe 2015.
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