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As the highest volcano on the island of Hawaii, it is an ideal location for astronomical observatories. أكثر...

I try to display an arrows on the map in html and using R and leaflet packag, code of map : # install packages install.packages(c("rgdal", "maptools", "leaflet", "htmlwidgets"), dependencies = TRUE) # load libraries library("rgdal") library("maptools") library("leaflet")...

This question already has an answer here: Preparing CSV files for use in ArcGIS for Desktop? 3 answers I am very new to GIS Programming and find myself having to download CSV files from the...

I came across a great tutorial about how to add a styled Google map layer to the QGIS OpenLayers plugin (http://gistncase.blogspot.com/2014/02/how-to-add-google-maps-styled-layer-in.html). However, it appears that some changes have been implemented on the QGIS/OL side since this was posted...

I am using QGIS 2.12. I would like to adjust the Print Composer's output resolution for "Export as Image" and "Export as PDF". The default is 300 dpi, but I would like 600 or 1200. Multiple websites say that it can be done, but they don't say how. أكثر...

I have a polyline shapefile with over 13,000 lines which I want to display in 3D to crudely model the trajectories of particles being erupted from a volcano. I have 2D lines which extend from the x,y coordinates of where each particle was ejected to where it lands. The Z coordinates for the...

I need to convert a MapXtreme workspace into one for GeoServer. Suggestions for tools/process? أكثر...

Bonjours, dans le cadre d'une étude sur zone d'étude, je chercher à géoréférencer l أكثر...

I'm building an application which needs to find nearby locations of places(say: shops, schools etc.) from the provided location(say: latlng of user). However i don't want to depend any providers like google since the place data will be also custom. Currently I'm using a mysql db with latitude...

So I'm extremely new to QGIS and am learning the material on my own. I have two CSV files with latitudes and longitudes, one has school address information and the other has fast food restaurant address information. I would like to find the distances between the two and the distances between the...

I have created a simple openlayers 3 map HERE , the map initialization code looks like so: var styles = [ 'Road', 'Aerial', 'AerialWithLabels', 'collinsBart', 'ordnanceSurvey']; var layers = []; var i, ii; var coordinate1, coordinate2; coordinate1 =...

I'm a new user of QGIS (and have experience using ArcGIS but zero programming skills) and I'm looking for a way to calculate the shortest path from addresses to subway stations via a network of roads. I have the Road Graph plugin, however the addresses and subway stations are point layers...

GIS Analyst Job Information GIS analysts are well-rounded, tech-saavy spatial individuals with a wide range of skills. They are multi-tasking, multi-disciplinary and fast-on-their-feet. GIS analysts are needed to bring together a lot of different spatial [...] The post GIS Analyst Job Profile...

I am trying to create an attribute table from an Euclidean Distance Raster. I get the following error: error 000423: Only single band integer dataset is a valid input The ED Raster has actually the pixel type as "floating point" instead of "signed integer". How can I change it? Should I...

السلام عليكم مرفق بالموضوع بحث بعنوان استخدام المرئيات الفضائية ونظم المعلومات الجغرافية لاختيار انسب المواقع للتنمية السياحية بمنطقة مرسي علم -... أكثر...

I am trying to get seasonality parameters from MODIS EVI (MOD13Q1) for Indonesia. I have loaded data from 2013-2015, but the plotted time-series is shifted from what I expect. Indonesia has rice-growing seasons peaking in Jan (season 1, Oct-Mar) & Apr (season 2, Mar-Jun) but the plots I'm...

So I want to combine all the polygons that share two different attribute values and don't really know where to start. The selection shows you my problem, they both have the same classification (890) and belong to the same block (third column). I want these (and all other similar occurences)...

Import GIS the key technology to make the best decision! أكثر...

I am learning Python Toolboxes with PyScripter. I have a test python toolbox that outputs a raster file. It works when run from ArcCatalog. As I understand it, it should also run standalone within Pyscripter but when I run it, no output appears in the Python Interpreter, and no file is...

How to create raster data and insert to db from this data sample in Postgresql (postGIS) ?sample DATA أكثر...