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bonjour, est ce que quelqu'un saurait qu'elleest l'usage de chaque échelle de carte : 1:10000, 1:25 000, 1:50 000, 1:100 000, 1:250 000, 1:500 000. jesais que 1:x veut dire qu'un centimètre sur la carte représente xcentimètre sur le terrain, maissi vous aviez des détailles exemple l أكثر...

I'm a beginner in satellite optical imagery. I have a landsat 8 image (11 bands downloaded from http://earthexplorer.usgs.gov/) for which I need to calculate the NDVI (Normalized Difference Vegetation Index) and possibly the NDWI (normalized difference water index) as well. Is it required to...

I am using Mapbox Studio, customized a nice basemap, and downloaded it. It downloaded as a .json file with a couple thousand lines of code. I want to be able to use this basemap (called basemap.json) in leaflet, like: var basemap = L.tileLayer("data/basemap.json", {maxZoom: 17,minZoom...

I am using QGIS 2.12.0 to create forest maps. I usually succeed to create maps from shapefiles with different projections but for some reason I cannot succeed to align the layer of one shapefile. As described in the help file and solutions found over the Internet I: Assigned a projection...

I have to access one ORACLE tab from QGIS but it does not work. From Instantclient_12_1 the connection and parameters are ok, while from QGIS we always get TNS-12545 error. ORACLE_HOME and TNS_ADMIN var are setted. But from trace log we noticed that the QGis client seems to be 11_2. Maybe...

I have a layer comprised of about 500,000+ simplified polygons that resulted from converting raster cells to polygons with raster cell values assigned to them. When I select the resultant polygons by attributes (say, those that have values above a certain threshold), I end up with a bunch of...

I can not save the figure an image. import java.awt.*;import javax.swing.*;import gov.noaa.pmel.sgt.ColorMap;import gov.noaa.pmel.sgt.ContourLevels;import gov.noaa.pmel.sgt.GridAttribute;import gov.noaa.pmel.sgt.IndexedColorMap;import gov.noaa.pmel.sgt.LinearTransform;import...

BSR, lorsque je lance GRASS GIS, le message suivant s'affiche " *ERREUR :G_getenv: variable LOCATION_NAME non definie *" et sa s’arrente, j'ai même installé les autres version sa m'affiche toujours le même message. Merci pour vos reponce!!!! Attention où vous postez SVP, GRASS GIS est un...

Mapillary*is a service for crowdsourcing map photos. Using smartphones or action cams users*collect images that are combined into a collective street level photo view. This is why*Mapillary is often referred to as OpenStreetMap-like StreetView. Until today Mapillary users have taken*over 40...

Registrar Registry Manager Pro 8.00 Build 800.31123 Retail (x86/x64) | 6.8 Mb Registrar Registry Manager is an advanced and complete suite of tools that allows you to safely maintain your local registry as well as the registries on the systems of your network. Since many years, Registrar...

I created a dashboard with several different widgets. They do update when I add filters to the layers. However, when I click on a point (school) all that happens is that the point is highlighted. When I right click, I can "show pop up" and other things. What I want to do is for the widgets to...

I have two folders with shapefiles:r'E:\SO\Polygons' and r'E:\SO\Districs' Within each folder I have 215 shapefiles named with similar naming conventions:poly_100 or dist_100. I need to clip the polygons by the districts if their ending digits are equal. I am new to python and at a loss...

We're a subcontractor on a larger project that involves generating client-specific reports. Clients must log in to see these reports (HTML pages), and we'd like to embed a private ArcGIS Online (AGOL) map within these pages. Is it possible to set permissions such that by virtue of being on the...

I have a set of polygons that I need to symbolize with a certain color. I have an column in the attribute table that contains the contains the html hex color value (#FF0000 Red) that I want the polygon to be colored. Is there a way to symbolize the color based on the attribute value? I see that...

Registrar Registry Manager Pro 8.00 Build 800.31123 Portable (x86/x64) | 13 Mb Registrar Registry Manager is an advanced and complete suite of tools that allows you to safely maintain your local registry as well as the registries on the systems of your network. Since many years, Registrar...

NASA scientists are collaborating with the Korea Polar Research Institute (KOPRI) to measure changes in the flow of the Nansen Ice Shelf in Antarctica. These measurements will then be used to model the physical properties of the ice. أكثر...

In the winter of 2015-16, scientists will be working to validate rain and snow measurements from the Global Precipitation Measurement (GPM) constellation of satellites by monitoring storm systems as they approach and traverse the Olympic Peninsula in Washington. أكثر...

Buffer zone isn't really the correct word, sorry, but I am not sure how to explain it. I want to make a circle around each attribute based of the size of the value, similar to a bubble map. However, I also need to select the overlaps to see which area has the largest overlap (does this make...

I am a new user of ArcGIS online. I need to build a map that allows to see the name of the inspector in charge of the area. So far I succeeded in creation a map that shows the boundaries of the neighborhoods and a pop-up (very basic) that shows the information required.I would like to know if...

Please excuse the beginner question, but is there a simple way to save a QGIS project and all associated files to a zip folder so that another person could unzip the folder and open the project? Or is there a better way to share a project with another person? Thanks! أكثر...