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Google Maps API v2 had great methods for lines and polygons to calculate length and area. v3 is lacking these methods (maybe just for now?). What other options do I have for calculating line length and polygon area? أكثر...

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I'm quite okay at R programming, but fairly new in GIS (especially in R). I have a set of coordinates and I'd like to create a custom shape around them.What I want to do step-by-step: Create a circle around the points and slice it to couple of sectors. The radius and the number of wedges are...

Is there any way to convert SmallWorld GIS topology to the format that pgRouting use?My costumer have use SmallWorld GIS and make his topology on it. but when he export his information as shape file, the topology is gone! How can the topology be preserved? أكثر...

I came across this valuable explanation of reflectivity on Pulsed Light’s website. They explain that there are three types – A. Diffuse Reflective B. Specular, and C. Retro-reflective. In... Click Title to Continue Reading... أكثر...

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Design Programs برنامج شامل لمختلف التصاميم الإنشائية التي يحتاجها المهندس الإنشائي واهم مايميزة انة بسيط جدا وسهل التعامل معة بمجرد انك تدخل القوى والعزوميعطيك جميع ابعاد وحديد التسليح فهو يصمم جميع العناصر الانشائية من اعمدة وكمرات وبلاطات وايضا السلالم .. و خلاصة الأمر أنه برنامج جامع لمجموعة...

from Wikipedia: View of Beijing from the CTS Hotel. This is intersection of Airport Expressway and 3rd Ring Road. I was reading an article entitled “China, the megalopolis of 110 million inhabitants that impresses the world” on a popular online journal (see article) and after a dozen lines...

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I have rivers that some times they do not match their real direction based on the DTM, and they need to be flipped. Is there any way to automatically match river direction based on the DTM in ArcGIS or any other software. Output needs to be a shape file, polyline. أكثر...

In my application where i use leaflet api, i am able to put two gate markers and polyline drawn between them. Here, i just wanted to find out the way to put the image from css on the polyline which should fit between two markers.I know the image has width and height. I beleive there must be...

السلام عليكم الله يسعدكم في الدنياء والاخرة ابغاء دراسات سابقة في المطارات الاقليمية الله يجزاكم الجنة أكثر...

I understand the point displacement, but I would like to display the circle without the circleoutline. Even when I change the "circle pen width" to 0,00 it displays a fine line. And there is no transparent color. Do you have any ideas? 1[] أكثر...

So I've started working for a company where people use background data like rivers, buildings, roads and so on a lot. The data is used all over the country, so I have to download a lot of data for each municipalities in my country. I want to set up a layer file, so that i.e builing data have...

I am trying to use SAGA to triangulate a set of .las files I have. I have tiled them using lastools, since the single file was too big for my computer to handle. I wonder, can I use the saga_cmd grid_gridding "Triangulation" for multiple files, or do I have to process each individually? And I...

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Bonjour à tous, Je poste ici un sujet lié à l'archéologie et au logiciel Qgis. J'ai de bonnes bases en SIG mais peu de pratique. Je mène un travail d'étude sur des plans de *sites archéologiques comprenant des maillages triangulaires implantés sur le terrain*. Je dispose pour... أكثر...

![old map georeferenced badly][1] [1]: I georeferenced this old map using Thin Plate Spline, and Cubic Spline as transformation settings. However, the result was quite bad. Do I have to add points througout the whole rasterfile for this to be even remotely readable, or is the map just too...

Using ArcGIS Desktop 10.0 SP4. I have a large dataset of sites that needs to be filtered down to a usable size. There is an attribute for the site_ID and another one for the site_type. There are duplicate site_ID’s in the dataset and I only need one record for each site. The preference of...