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I have an Android app when I have multiple polygons of a person's position, and I want the intersection of these polygon to know his exact position. أكثر...

I have an 8 bit raster from which I want to create a new raster which just contains the cells containing the values 20 and 24 of the original raster. I have SAFE FME 2015 but am unsure which transformer to use. أكثر...

what I need to do is the following task in ArcGIS (10.2): I downloaded shapefiles of different countries. For one of these countries, e.g. Austria, I need to define, eg. 400 squares, which means that afterwards Austria is separated in 400 (or any other number) of squares. As far as I can see I...

I'm working on a webmap using OpenLayers 3 and vector layers, geoJSON. I've managed to render the layers and add click interactions: select = new ol.interaction.Select({ condition: ol.events.condition.mouseclicked, style: myStyle, }); var map = new...

I am working with ArcMap and C#. In the bottom left hand corner, there is a menu where you can toggle between Data view and Layout View, a Pause button, and a refresh button. I have created an Add-in for ArcMap. I need to run some code when the Refresh button is clicked. Does anyone know the...

I have a bunch of points without XY coordinates, and it is a global point dataset. This dataset is a 1*1 grid in a 400*800 dimension. It is quite obvious that each point has specific XY coordinates, but I don't know how can I assign a coordinate to each point? Is there any way to assign a...

I'm trying to create a plugin for QGIS using python, But need some help. I want to 1.Zoom to a layer and 2. make the layer visible(switch off or on). But I have managed to zoom to an active layer by setting the active layer in the map canvas by using. import qgiscanvas =...

الــدورة التدريبيـــة/ مهــــارات الإشراف الأمنـــي بـــداً مـــن 4 : 13 أكتوبـــر 2015م في كوالالمبــــور_ ماليـزيــــــا للاستفسارات واتمام... أكثر...

السلام عليكم ورحمه الله وبركاته اعضاء المنتدى الكرام يتشرف مركز الخبرة الحديثة للتدريب والاستشارات دعوتكم للتسجيل بدورة إدارة الـجــــودة... أكثر...

What vrey simple way is it to get name and coordinate from OSM - by the past I got a table but am now unable to get it from a very basic method. I dont understand anything to all these script proposed xith Osmosis ... أكثر...

I am trying to create a radiometric map, I have x, y , z coordinates and a value in excel. I want to create a raster map based on this data. How do I go about doing this. I am using ArcGIS 10 with Target/ أكثر...

In my script I want to open layer named my_layer if it is in the map layer registry. I use following code for it: inputLayer = QgsMapLayerRegistry.instance().mapLayersByName("my_layer")[0] If not found, I add it to the registry from file. However, if there are no layers in the registry, it...

I have streams of GPS points that are transmitted from a device aboard a bus in real time. I would like to use these points to infer which route the bus is following. I have routes stored as GPS point of bus stops, with a path shape which I have interpolated points every 20 meters. Currently I...

I have a signal setup for a feature deletion event on a layer: self.layer.featureDeleted.connect(self.feature_deleted) When I try and grab an attribute from the deleted feature on the slot, a StopIteration error is thrown (i.e it cannot retrieve the feature). I would have thought I...

As a part of my PhD I have to map the rivers of Northern Peloponnese, Greece. I have downloaded two DEMs from Nasa Reverb, which I connected with "mosaic to new raster". I have started the usual process of "fill", "flow direction" and "flow accumulation" in order to be able to analyze the rivers...

I created a polygon by buffering a polyline. I need to extract area value (Ex: WaterArea) intersecting the polygon. I tried the code below. It returns all the intersecting water area features. I need the water area values only. My code is : // Setup a spatial filter for intersecting our...

Hi I followed this link and it worked for me.. https://switch2osm.org/serving-tiles/manually-building-a-tile-server-14-04/ I can serve tiles locally but running it and by just typing the link like for instance - localhost/osm_tiles/0/0/0.png and it gives me an image with a particular zoom...

I need to scale the SVG symbols on zoom level. @Underdarks answer in the posted question did not help me thus I can't set the SVG symbols as label background for I have labels which should not be overlaying the SVG. How to scale SVG symbol based on zoom level in QGIS? Thx for advice...

In ArcGIS 10.1 I'm trying to normalize a section of a DEM (digital elevation model) from original values to values ranging from 0 to 100. First I clipped the raster DEM with an irregulary shaped polygon. Now I'm tying to change all the values to a range of 0 to 100 for further analysis. I'm...

Is it possible in PyQGIS to have in one layer more polygons and some would have one set of attributes and another different? E.g. Polygon_1(name, size, average_age), Polygon_2(name, size, average_height), Polygon3(same as Polygon1)... I imagine that I would create two tables and when I...