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Bonsoir, je cherche à convertir un raster (image Landsat) en vecteur, j'utilise l'outil polygoniser un message d'erreur me dit que le fichier raster n'existe pas dans le fichier système. question: est-ce que je doit mettre mon ratser dans le fichier système pour que ça marche et si oui, où...

The following script is working in the python Window in ArcMap but not in pyhtonWin: import arcpy from arcpy import env env.workspace = r"J:\Non_RS_MXDs\LongHaul.gdb" mxd = arcpy.mapping.MapDocument(r"J:\Non_RS_MXDs\RSF_Long_Haul.mxd") df = arcpy.mapping.ListDataFrames(mxd...

Using a Derived/Master Mosaic dataset as a container for source raster mosaics, I have successfully enabled the Time Slider feature in ArcGIS 10.1. The imagery on display was acquired most years between 2004-2010. However, in the case of the year 2006 I have more than one dataset; one with...

I have a xls database of street addresses. I want to get the latitude/longitude coordinates for all of them. I know very little programming, but I can learn. What's the easiest way of doing this? أكثر...

I don't see the save as layer file option أكثر...

Is there a way to stop hover tooltip to be shown over the infowindow in the CartoDB editor? Thanks,Bonurbe أكثر...

1 - I create a map, called myMap. 2 - myMap contains 3 layers. 3 - if i comment the ", layerInfos..." line below, the legend appears correctly, displaying symbology for the three layers. 4 - if i remove the comment from the ", layerInfos..." line below, a"no legend" sign appears 5 - Firebug...

I have a .json file which I would like to be able to import into ArcMap to then publish as a map service to AGOL. The format of the json file when I receive it is like this...

I have created a custom print task using my own custom templates and the Export Web Map tool in Server Tools of ArcGIS 10.2 to create a geoprocessing service similar to the print task made by Esri. The geoprocessing service sits in the same directory as my map service for the mapping...

Step by step instructions for splitting a feature, moving a node (point on line), deleting a node, adding a node and jointing two features. This tutorial is designed as an introduction to GIS and using QGIS. أكثر...

Esri map shows the areas affected by the fire in Amador and Calaveras counties. أكثر...

I have a parcel shapefile and point data. I need to select parcels within 0.5 miles of each point and export that data to KML then repeat the set of each point (Iteration). The KML also needs to be saved as an ID field each point has. I have tried to do this with Model Builder. How would you go...

How do I show up a text only once and center it in the middle of the object (in this case building) using CartoCSS? Here in the image you can see that the text "Terminal 1" shows up multiple times. أكثر...

I have generated a delaunay polygon file that represents terrain data. Is there a way I can produce contours from the polygon file? I know I can convert the polygon to an Esri TIN, and then produce other products, but is there a way to do it directly from the polygon? أكثر...

I want to get the path of a layer in my plugin, in the console it works fine but in my plugin it gives me the error AttributeError: 'NoneType' object has no attribute 'dataProvider' def run(self):"""Run method that performs all the real work"""# show the dialogself.dlg.show()mapCanvas =...

i would like to take control of the mouse pointer in QGIS (for example constraining it to a given extent...) Is there any way to do that using PyQGIS ? Thanks ! أكثر...

The article begins by detailing the benefits of using GIS systems in order to aid in understanding information instead of tables and statistics. The TIGER files, or geographic base files for the United States which go down to the street level of information, are then brought up and discussed...

When I first moved to Georgetown in August of 2014, I was constantly looking for places where I would be able to run without being on the street by cars. I used google.com’s streetmap in order to find the location of the best parks in Georgetown, TX. Even though many locations came up, I...

By Lisa Thresher It’s lunchtime on a Saturday and my stomach guides me to the kitchen. I notice an avocado sitting on the counter. Perfect, it’ll be a nice addition to a salad! Then I notice grey fuzz protruding from the top of it. My avocado went bad, and is moldy through and through! This is...

In 2007, James B. Holt published an interesting article on “The Topography of Poverty in the United States” based on cartographic analysis (I have reproduced two of his maps here). His concluding map posits a “continental poverty divide,” with most areas of entrenched poverty found in the...