Hot answers tagged

8

You have some environnemntal data there, provided by le Muséum National d'Histoire Naturel. The data.gouv.fr portal just opened few days ago. IGN geoportal : http://www.geoportail.fr/ Some data from IGN are available for free. You will find many ressources regarding hydrology on that document (pdf) - see also http://www.eaufrance.fr. Regarding geology, BRGM ...


8

This is a known issue: http://support.esri.com/es/knowledgebase/techarticles/detail/17336 Basically it's a problem with using a raster layer in the inset maps. If you can only use vectors on your insets the transparency works.


7

We used SPreAD-GIS to model outdoor sound for our 500+ sq mi siren system build as detailed in this ArcNews article. I used SPreAD-GIS with some extensive modifications to allow it to do parallel processing and in_memory datasets (takes a long time to process 200 sirens over 500 sq mi otherwise). This requires Spatial Analyst and a version of ArcGIS that is ...


6

With EPSG:2227 NAD83 / California zone 3 (ft US) The result looks quiet good: EPSG:2872 and 3494 have the same proj definition. You can load the data as delimited text layer into QGIS, assign projection EPSG:2227 to it, and Rightclick -> Save As ... to WGS84 (EPSG:4326) under a different name. Just take care that usually x is positive East, and y is ...


6

Hand digitizing the paths in ArcMap 10 may be easier than walking around every path on campus with a GPS. A really quick and easy way to accomplish your task is as follows: Open ArcMap 10 Right click on a folder within the Catalog and select New > Shapefile Click your new shapefile and select feature type "polyline" Add a basemap (File > add data > add ...


6

You are providing html in setContent() var popup = L.popup(); function onMapClick(e) { popup .setLatLng(e.latlng) .setContent(e.latlng.toString() + '<a href="http://www.google.com">Visit Google</a>"') .openOn(map); } map.on('click', onMapClick);


5

I presume you intend to use a GPS (possibly on your iPhone) for this. Have a look at the excellent Open Street Map (OSM) project. There is a guide on how to do exactly this here: http://wiki.openstreetmap.org/wiki/Beginners_Guide_1.1. This should get you started.


5

Yes, QGIS 2's print composer there is a tab called Atlas Generation, it is how you create map books.


5

You are misunderstanding what is being measured! This graph seems to look at what web mapping javascript APIs are used on web pages, and it makes sense that things like QGIS or Mapserver are not counted, because they are not javascript mapping libraries!


5

OK, so the "Element Name" box appears to be the likely solution. This is non-intuitively placed in the "Size and Position" tab of the map layout element's properties dialog box.


5

The simplest way to run your analysis (without trying to define your actual inputs) is to do some basic raster algebra. Have a go with the raster calculator: https://docs.qgis.org/2.8/en/docs/user_manual/working_with_raster/raster_calculator.html You can build up some other vector layers too, such as 'distance to waterbody' as a distance raster. To ...


5

You can change the style of your point symbol (reducing its size and setting a transparent boundary). As your point seem to be a regular grid, you could also use squares instead of circles. You can also increase the number of classes if you want a more "continuous" rendering. EDIT : In order to change the size of your symbol when you zoom, you can set the ...


4

Also make sure the GPS receiver is set to the right UTM zone. Probably 14N unless you're very far east along the KS/NE line.


4

Esri's Runtime for WPF supports WMS layers. It is not free, but the ArcGIS Silverlight SDK is and has many of the same capabilities. So you may want to try the Silverlight SDK in Out-of-browser mode, which is similar to running a WPF app. You need to set up a proxy though.


4

The Best is Sport Tracker (originally developed by Nokia) Will log GPS data like coordinates, altitude, colour codes the route with GPS accuracy/number of satellites (optional) Exports to GPX and KML (CSV and XML) Can view on the map or via Google Earth on Android (Ice Cream Sandwich - Android 4.0.3 works best) for this. Available on Google Play (App ...


4

OK- I figured out a fix for this. Susan Jones has a script http://arcscripts.esri.com/details.asp?dbid=16055 that works the way I was hoping the Bearing Distance to Line tool would work. The output from the script were lines radiating at varying angles and distances from my base coordinate (datum). Then I used Feature Vertices to Point to add an X,Y ...


4

OpenLayers directly read OpenStreetMap vector files (.osm format) and Leaflet can read it with plugin. Osm file contains all the points of the road in order.


4

The complexity of an online map is widely dependent on several things; first being what api/platform you want to use (CartoDB, ArcGIS Online, Google Maps, etc...). What API/platform is best to use will be at least partially dependent on several other factors though, such as what licensing restrictions you can work within (ex: most of Google's api's ...


3

If Lewis' answer is a bit brusk - here's what he meant: QGIS is a free GIS package it's available here - http://www.qgis.org/ Tiger Census boundaries are here: http://www.census.gov/geo/maps-data/data/tiger.html Depending on the accuracy of what you're up to I'd suggest using the Cartographic Boundary files product in the first instance as this has the ...


3

as stated the graduated symbols for each class. (you are not clear if these exist in the same dataset or separate). Also if they exist in the same data set after graduating the symbology you can use the symbol levels tool to step the larger symbols under. Found on the layer property dialog. also in 1.8 on the style tab (1.8). and another feature (point ...


3

There are a number of text formats to choose from. However, if it must be text based the ESRI ASCII grid format (.asc) may be a good choice because it dispenses with recording the X and Y (lon and lat) coordinates. It does this by assuming a regular grid whose dimensions are stored in the header. Only the raster value at the center or lower left corner (...


3

If you like to avoid the .OSM file, you can also use the Overpass API to get live data: http://www.overpass-api.de/open_layers_mashup.html


3

CartoDB (https://cartodb.com/ ) is quite good for this, or you can convert your vector to the KML format and open it in Google Earth.


3

It is finally a matter of taste but if I should use only one program I would select one of QGIS gvSIG (or gvSIG CE) Kosmo GIS uDig Map Window and OpenJUMP are also worth mentioning. They are more simple but with less features, especially OpenJUMP which suits best for certain vector processing.


3

Here is a suggestion using ggplot. I use ggplotGrob to combine the full and zoomed map and grid.arrange from the gridExtra add-on to combine the maps for different variables. There are many adjustments that can be made, of course. library(sp) library(ggplot2) library(grid) # for unit library(gridExtra) # for grid.arrange # zoom bounding box xlim <- c(...


3

When modelling the distributions of species, may they be animals or plants, fuzzy overlays are typically used. For an introduction into habitat suitability modelling, I suggest you take a look at GISLounge - Overview of Fuzzy Logic Site Selection in GIS. As Michael has already pointed out correctly, you will need more than one criterion (in your case ...


3

Check the instructions from Underdark about using OSM data (same as Stamen uses) with some style files she has made (see below for links) These have completely changed print cartography for us - we're doing both 36x24" plots and static images with the OSM lines styled with the 'Google' / colour version, and a black and white style I modified (I should ...


2

You might want to browse through cartophile blog for some inspiration.


2

Please check the Limitations of KML/KMZ on Google Maps API: Google Maps supports the following KML elements (that is, KML queries in the Search box and GGeoXml objects in the Maps API): Placemarks Icons Folders Descriptive HTML Entity replacement via <BalloonStyle> and <text> KMZ (compressed KML, including attached images) Polylines and ...


2

Is writing your own app out of the question? Location information is exposed through the LocationManager: http://developer.android.com/reference/android/location/LocationManager.html And the data you are likely referring to are in the NMEA string: http://developer.android.com/reference/android/location/GpsStatus.NmeaListener.html



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