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Basic question: is there a way to unable attributes consulting for a given layer? I have several layers I need to visualize at the same time, but I would like to specify that I want to question one specific layer when I click the canvas using « Identify feature » option. أكثر...

I'm creating a series of maps using ArcGIS data driven pages. I know how to display features that share an attribute with the index layer, but is it possible to display features (and similarly, labels), based on their proximity (i.e. within a certain distance) of the current index layer feature...

I'm confused about the use of this quantity. For example eumetsat in pag. 16 radiance is equal to: Physical Units = Cal_Offset + (Cal_Slope x Level 1.5 Pixel Count) (expressed in mWm-2 sr-1 (cm-1)-1 ) and table in page 20 represents dynamic range in W/m^2*sr*um unit. The point is...

I am using python and QGIS 2.0. I am trying to clip rasters in a folder by one polygon feature. It's the first time for me using (let's say) "PyQGIS", I was used to arcpy before. Anyway, I don't get my simple script to work, any suggestion would be very appreciated! import qgis.core...

Kursus selama 3 hari ni dikendalikan di PEGIS Penang. Seramai 30 peserta hadir untuk kursus 2 hari ArcGIS Desktop, kebanyakannya pegawai dari jab kejuruteraan Majlis Bandaraya Pulau Pinang dan sebahagian dari Jabatan Penilaian & Pengurusan Harta dan pegawai Pusat PEGIS sendiri. Untuk kursus...

Statoil has implemented an organized system for gravity and magnetic data which both specialists and generalists can use. Statoil geophysicist Christian Gram explains how it works and how it has made it easier for team members in Statoil's exploration operations to search for and find...

Bonjour, Avant toute chose, je débute dans QGIS. J'ai eu beaucoup de retours positifs alors j'essaie de m'y mettre pour ce dont j'ai besoin. Je souhaite faire une base de données naturalistes sous QGIS. J'ai donc créé une couche points avec les champs dont j'ai besoin. Lorsque j'ajoute...

I have a tool I am writing that takes in a multiple parameters. The last of these, Codenumber, I want to define to be 1,2,3 or 4. I am attempting to do this by use of a Value List. See below section of my code; outFC_location = arcpy.GetParameterAsText(0)end1_Easting =...

If Toyota has its way they will be turning your car into a mobile mapping system. This is not the first time I have seen this model proposed. The basic idea is to use the sensors on the car to... Click Title to Continue Reading... أكثر...

Angela Merkel, Hillary Clinton, Melinda Gates? According this interesting article in National Geographic there is one woman who is and has been for a long time more powerful, than this trio… Virgin Mary – the mother of Jesus. According to the text Virgin Mary barely speaks in the New Testament...

I have an point location and the information given is: Easting: 519122.06 Northing: 1290630.07 Original thought was it's UTM, but does not appear to be correct because I know the point needs to be in Florida. Is there another system similar to UTM? I need to convert these to decimal...

I need to make kriging analysis in QGIS (v1.7.4). I found out, that it should be a part of SDA4PP plugin, but I just couldn't find it in any repository (even third party). It looks, like it just disappeared from the web. Is it possible that I did something wrong? Thanks أكثر...

I'm looking for a way to vector-map Birmingham population densities by Lower Level Super Output Area (LLSOA). I have two sets of relevant data: the ONS LLSOA boundary set, and ONS estimates of population density. The LSOA boundary set is georeferenced, and assigns each area an ID. The density...

I'm trying to extract the layer DEPARE from an S-57 datafile and convert it into a shapefile. I'm using ogr2ogr from OpenGeo Suite 4.5 (GDAL 1.11.1) on Windows 7 64 bit. The problem is that when I issue ogr2ogr -f "ESRI shapefile" depare.shp US6RI26M.000 DEPARE I get an error FAILURE: Couldn't...

On trying to copy a feature class to a feature dataset, I get this error message (see the screen shot). Any ideas how this is happening? error copying from FeatureClass to Feature Dataset أكثر...

I have multiple QGIS projects that need to go to different computers. I put all the files on a USB and loaded it under "Documents" on the other computers like it is saved on my own computer. However, when opening the projects on another computer the "Handle bad layers" window pops up. There...

As I read data from a text file and add points to a QgsVectorLayer (as well as related attributes), each new record gets 'stacked' on top of the previous one in the Attribute Table (and within the Vector Layer as well) and I end up with the first record read having the highest index and the last...

I am working on a project aiming to create a geographic simulation for how people interact around a site. Situation: There are x people in an enclosed area (such as a zoo). There are y locations to visit (attractions). Scenarios: I want to simulate how busy each location would get with the...

مقدمة: يعتبر الماء أحد الموارد الطبيعية المتجددة على كوكب الأرض،يضمنإستمرار الحياة عليها، يقول الله عز و جل في كتابه الكريم : " وجعلنا من الماء كل شئ حي "، (سورة الأنبياء الآية :30) .و يشكل الأساس الذي ترتكز عليه مختلف أنشطة الإنسان الإقتصادية كما أنه يتأثر بها . وقد أصبحت الموارد المائية في...

إذا كنت من الاشخاص الذين يتطلعون الى تحميل الكتب الالكترونية على الانترنت مجانا و يرتبكون من كثرة الموقع المخصصة لهذا الامر مع توجد عدة مواقع توفر هذه الخدمات منها مواقع عربية أو غربية سنتعرف على أفضلها عبر قائمة بأفضل 6 مواقع لتحميل آلاف الكتب الالكترونية مجانا. 1-maktbtna : هو أكبر موقع عربي...