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When generating pie charts in ArcGIS, it appears that the legend entries generated for the different slices are named based on field name, rather than the field alias. I've done some research, and found a few historical examples where the user could at least change the labels in the table of...

Leaflet has a 'click' event: map.on('click', function(e) { alert(e.latlng);});This does not appear to work when map layers are displayed on the area clicked. Is there a way to use map.on('click') so that it ignores any layers on the map? Thanks. أكثر...

Given two different partitions of a shape (for argument's sake, two different administrative divisions of a country), how can I find a new partition into which both of those partitions fit, allowing for (and optimising) some error? For example, ignoring the error, I want an algorithm that does...

I was wondering if anyone knows how to create multivariate symbology. I have point data with a capacity number and a utilization rate for a type of youth center. I want to show the capacity as a graduated symbol and the utilization rate as a color classification. I've been playing around in...

How can I fix this ? My problem is the red "x". أكثر...

Let's take as an example of a spectroradiometer MODIS, and as an example of a multispectral sensor the Landsat8 (OLI).What is the difference between these two sensors? Should we compare a spectroradiometer instead with a hyperspectral sensor since in the case of MODIS the number of bands is...

I am working on a specific project based on QT 4.5 and QGis API C++ 2.8.2 I have a S57 File, I want to load it, and render it into a canvasMy canvas is created, the build and link is ok,no error, read file is good, but rendering notWhen I launch my application I can see the qDebug when...

Is there any way to automatically select the main rivers of a very branched river network? أكثر...

I'm having some problems with Neo4j Spatial and OSM.http://stackoverflow.com/questions/31523109/how-to-run-neo4j-with-osm-and-neo4jspatial I'm considering using QGIS + Neo4j is that possible? Any suggestions? أكثر...

I am having a problem converting WKT to shapefile. I have a csv file consisting of three columns: ID, Name (of the area) and WKT comprising set of lat/long coordinates of area boundaries. For example, first row looks like this: 1700003504,Westbourne Green,"(51.5212 -0.2011,51.5213...

I am creating a map with traffic signals in a city. Creating a point layer and adding my symbols as SVG mark is appropriate for 90%. But some signals explain alternativ routes used during events. These are not legible anymore when size is small enough to fit the map. That's why I'd like to...

We are using Arc GIS Online to display some point data. In ArcGIS Online we configured the attributes to point to a hyperlink that is located in our gdb. Our GDB contains a field that points to where we are hosting an image of this point (pic2) For some reason this link is ending at the first...

I have a lot of rasters files (more than 6000), each one represents the presence and absence of a species -1 for presence and NoData for absence. The set of rasters covers the whole Latin America and they can overlap eventually. I also have a vector polygon layer which bounds an area in which I...

I've installed Geopandas and its dependencies. A ImportError results in Fiona's ogrext.so lookup of "_CPLSetThreadLocalConfigOption": Code executed: boros = GeoDataFrame.from_file("./data/nybb_14a_av/nybb.shp") Error result: Traceback (most recent call last): File...

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Bonjour, Je souhaite faire une analyse thématique sur la dernière colonne que je vais créer. J'ai un problème !! Quand j'enregistre les modifications de ma table attributaire et que je ferme la fenêtre, les chiffres changent. Ils ne correspondent à rien. ça m'énerve !! Pièce jointe 7756...

By April Richards EPA’s Small Business Innovation Research team at the conference. I love my job, but every so often it’s a good idea to get one’s professional batteries re-charged. Recently our EPA Small Business Innovation Research (SBIR) team had the chance to do just that when we attended...

I am using qgis and of recent I have been faced with the problem of topographical maps. I did an online search and the available data was for the US only on Google Earth. I equally discovered that Google maps offers altitude contours, but I am looking for a solution for the case of Central...

This is a follow up question based off of this question. I have a line feature class representing storm drains and a point feature class representing where storm drains are connected. The point feature class has an elevation for each point allowing me to determine the slope of the storm...

I need to set up Linux server (Debian or Ubuntu), which provide GRASS7 algorithms via WPS. I have some attempts with 52°North WPS, but without any success. Also there are many other ways how to do it, but I haven't enough time for testing step by step. I hope I can find here someone, who knows...