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I have a model that isolates a place's road network based on my input of the place's name. What I need to determine is if any of the road segments in the network are greater than 500m. To do so I've written the following into a Calculate Value tab in ModelBuilder: def...

All the articles I'm finding including GDAL or PIL(?) which I cannot use. So I am trying to convert a raster I have to a Numpy Array with Arcpy and Numpy and then calculate some statistics on it but running into an error. Not much documentation on this and not sure what I am doing wrong. I am...

I'm trying to load more than 13 thousand points in leaflet from a geoJson file, everything seems to work just fine except the Popup function. I've looked everywhere for a solution and most answers out here do not work in my case. Here is an excerpt of my code: //calling the geoJSON...

زى النهاردة فى عام 1973 خاضت القوات الجوية المصرية معركة من أشرس وأقوى معاركها فى سماء مدينة المنصورة دائما فى معركة جوية ضد العدوان الصهويني ، معركة... أكثر...

I have around 700 polygons dbase layers that I need to run in Arcmap plugin - Conefor inputs file (to get two files input files to Conefor - nodes and connections). I would like to write a script in Python for it. How do I access this plugin? Or does anyone have a better solution?Thank you very...

I'm worrking with network analyst extension (ArcGIS)... I have gps points (currently GTFS transport files) who are not accurate with the road network. As a result some points are snapping on the wrong road so when i'm doing my route, there are some mistakes. Is it possible to do a network...

أن البحث العلمي في كل المجالات الأدبية والعلمية لابد أن يستند على خطوات أساسية تمثل البداية التي ينطلق منها الباحث في إنجاز الخطوات اللاحقة من البحث، وكلما كان إعداد تلك الخطوات سليماً ووفق أسس علمية انعكست أثار ذلك على النتائج التي يتوصل إليها الباحث في النهاية. وللبحث العلمي الجغرافي أصول يجب...

I am importing some very large rasters (in the tif format) into Postgres SQL (9.3) using raster2pgsql on the command line. Most of the rasters imported fine, some had to be converted to the img format and then imported fine, but some more have not imported at all. They appear to work, and the...

I created some near tables, with a max near distance of 8000m's. It is extremely timely exporting these files to csv right now. Is there a quick way on ArcGIS to delete observations that have a distance of more than 250m's? Preferably without using Python, I have never used it before, and I...

As a better solution for Mobile, I'm stripping away Marker-Infowindows onClick and instead display a «Panel»/DIV with the data from the feature on mobile devices. This gets us more control over styling and for mobile users a way better UX. But this way, there is no affiliation with the Marker...

I am going through a python script in arcpy 10.1 to Select a field value (i.e. NEAR_DIST) based on three condition as 1) NEAR_DIST

السلام عليكم ورحمه الله وبركاته اعضاء المنتدى الكرام يتشرف مركز الخبرة الحديثة للتدريب والاستشارات(metc) دعوتكم للتسجيل بدورة الاتجاهات الحديثة في... أكثر...

i have a csv file in which some fields contain values greater than 255 characters. i want to ask that wether joining csv file with a shapefile overcomes the 255 character limitation of shapefile and displays the data in csv completely.if not then whats the solution for it? أكثر...

i have three files that i should use for a GIS application: map.aux, map.tfw, map.tif The .tif file is a "layer" that highlights some building over a map. How can i bring these informations (and "image") on a layer of Google Maps? Any idea? Thank you! أكثر...

I'm having an installation issue and I can't find any documentation on what might be happening. 1.My server is an apache2.2 run on Debian 2.I run apt-get install qgis-mapserver libapache2-mod-fcgid 3.I follow the clear instructions from https://github.com/qgis/qgis-web-client I change the...

Has anybody managed to get GeoServer 2.8 with the ArcSDE plugin (ArcSDE 10.0) to retrieve updates to data as soon as they are made when data is retrieved from a SDE view? The SDE view is in Oracle 11.2.0.4.0 which is based on a versioned feature class that takes part in a replica, hence can not...

How find shortest path using A* Algorithm ? and how create user defined functions for routing ? if there any other ways (functions,Algorithm) for find shortest path in SQL Server 2012? which is the more effective fastest algorithm for finding shortest path in SQL Server 2012? Can anybody...

In yesterday’s post we mentioned that Google Earth’s measurements did not match ours which used the Haversine formula. So we decided to investigate a bit more. The Haversine formula assumes the earth is a perfect sphere and in our case we assumed the radius to be 6,378,137m. The earth is...

I've been presented with traffic count and journey time data between 20 different ANPR (automatic number plate recognition) points along a given section of road. I've been tasked with attaching this data to a GIS road network so we can visibly see traffic volumes for journeys and time for...

I have a database that I viewed in QGIS using PostGIS. I managed to link them up using the correst host, database combination last year. I am now revisiting the work and am unable to link them again. The appropriate extentions are installed in Postgres (i use pgadmin), namely postgis and...