نتائج البحث

  1. ا

    What Story Maps support replacing the map with a 3D scene?

    I am currently creating story maps to be able to display a 3D scene to users and I am trying to decide which layout works best. Right now I have run into an issue where only certain story maps will allow the main map to be replaced with a URL of a 3D web scene. This is becoming quite difficult...
  2. ا

    Wrong parameters for ESPG:42304?

    I need to use the Lambert Conformal Conic for Natural Resources Canada ESPG:42304, which I could not find in QGIS 2.10.1 CRS list. I located the proj4 parameters on-line from three locations, all of which were the same: +proj=lcc +lat_1=49 +lat_2=77 +lat_0=49 +lon_0=-95 +x_0=0 +y_0=0...
  3. ا

    How to query attributes cross-table in QGIS?

    is it possible in QGIS to query a layer with data from another layer? And if so ... how is the syntax for that? Usecase: I have a lot of image-position points and a lot of monitoring sites.I would like to set the monitoring area layer, so that it only shows areas where we also have images for...
  4. ا

    [LizMap] Lizmap : Problème avec le mode édition (You must set the geometry)

    Bonjour, Mon Lizmap est 2.11 et mon qgisserver est 2.4 Mon lizmap fonctionne très bien concernant l'affichage des couches du coup j'ai voulu utiliser le mode edition de Lizmap pour obtenir un gros plus :) J'ai installé l'extension spatialite sur le server en suivant la notice sur le site...
  5. ا

    Maps, CartoDB and Open Source: Interview with Andrew Hill

    <div dir="ltr"><div><div>CartoDB is the next generation location intelligence and data visualization engine that enables the transformation of location data into insights. CartoDB is building an ecosystem that gives universally accessible technology to connect and map data, create data-driven...
  6. ا

    Identifying a cluster of polygons based on attributes

    I'm trying to identify a cluster of contiguous parcels that, when combined, add up to at least a given size and, when combined, have an assessed property value less than a given $ amount. I have a parcel shapefile with size and value attributes. Is there a tool that can accomplish this...
  7. ا

    transform MULTILINESTRINGs to curves in cartodb

    I have a table with a column that contains MULTILINESTRINGs, where every string contains the longitude and latitude of a starting- and an end point, e.g.: MULTILINESTRING((97.0253024 4.3685491,8.5618685 47.4524688)) Now I want to add geometry to those lines and make them curved so that I get...
  8. ا

    ERROR 000271: Cannot open the input datasets Failed to execute (CompositeBands) (arcp

    I am trying to stack bands 3 and 4 together for numerous landsat scenes, and I am trying to do it using a loop and arcpy.CompositeBands_management. The code I am using is: import arcpy#set environmentarcpy.env.workspace=r'F:\Sheyenne\Atmospherically Corrected Landsat\hank_masked\NDVI'#path to...
  9. ا

    Finding empty attribute field with search cursor

    I'm trying to iterate through all fields in my feature classes to find which fields are empty. I've had a go at using the SearchCursor (borrowing bits of code from other answers). This is what I have: if fieldList:with arcpy.da.SearchCursor(fc2, fieldList) as cursor: for row in cursor...
  10. ا

    FME - Exploding Series of Attributes to Features for Each Combination

    Given a unique identifier attribute (TYPE below), there needs to be the combination for each comparison between the identifier and (n) value attributes to be written as a new feature. See the example below: Input Table: Output Table: Is this possible to do in FME? أكثر...
  11. ا

    Why do I get correct area and intersect area when use wrong projection?

    I need to calculate areas and intersection areas for polygons (some real geographical objects like lake, city, country, e.t.c.). Polygons located in California, New Zealand, Russia.Anadyr, Sweden All polygons are in WGS84. What I did using GeoTool java API: Project all polygons using...
  12. ا

    Why is GDALPolygonize so much slower than ArcGIS Raster to Polygon?

    I am attempting to polygonize a raster using GDALPolygonize() in a Python script. The script began polygonizing yesterday at 5pm and is still polygonizing now at 9:30 am. I have no clue how far along it is, but I know it is still going because when I refresh my Windows explorer I can see the...
  13. ا

    Beyond quantification: a role for citizen science and community science in a smart ci

    The Data and the City*workshop will run on*the 31st August and*1st September 2015, in Maynooth University, Ireland. It is*part of the Programmable City project, led by Prof Rob Kitchin. My contribution to the workshop is titled*Beyond quantification: a role for citizen science and community...
  14. ا

    Land Administration and Parcel Management Case Study: New York State

    Data visualization makes our lives easy and simple. It is not a new thing, but the way we do it improves and upgrades daily. Just recently we were still drawing maps, filling forms manually and collecting GPS locations as a single point, with no media associated. With the boom of free data...
  15. ا

    Go Big Time with Big Data

    Big data is measured by volume, velocity, and variety. My colleague and fellow big data lover Mansour Raad recently highlighted how these three measures themselves are increasing almost exponentially in today’s sensored world while talking at one of the commercial business special interest...
  16. ا

    State of the GNSS - Part 1 | GPS Modernization

    Author: Daniel Macias Valadez, GNSS Analyst at Effigis Original text available here: http://bit.ly/1IYSbNY GPS, being the pioneer of all Global Navigation Satellite Systems (GNSS), is the only system that has remained fully operational for civilian use for more than two decades. The number of...
  17. ا

    Python-gdal create geotiff from array with colormapping

    I am creating grayscale, single channel geotiff files from numpy arrays with the below module, but I would like to apply a fairly standard colormap to the data. I've tried three channels of R,B and G and have had no success if producing anything that looks correct. I'm thinking my approach, in...
  18. ا

    Updating and interacting with map layers through a windows form

    Using arcobjects I am attempting to connect a windows form with a checkedlistbox, to the layers that I have on my map in ArcGIS. When I first create my form, the list of checkboxes will automatically populate itself with the name of all the layers, and the checkbox next to the layer will be...
  19. ا

    Extract widget help needed: [on hold]

    1st Configurable Map Viewer is great! It's saving me a ton of time. I'm trying to configure an extract widget and having trouble. 1st problem is my format list and layer list won't populate. I'm very new at this, I'm sure it shows. http://205.156.4.77/cmv/viewer/ أكثر...
  20. ا

    OpenLayers3 change Layer source URL (or replace features loaded from another URL)

    I have a map with a Vector layer, containing features from a GeoJSON source: var map = new ol.Map({ layers: [new ol.layer.Tile({ source: new ol.source.OSM() }), new ol.layer.Vector({ source: new ol.source.Vector({...
أعلى