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I have a shapefile that looks like this > str(FieldsMap)Formal class 'SpatialPolygonsDataFrame' [package "sp"] with 5 slots ..@ data :'data.frame': 3 obs. of 2 variables: .. ..$ id : int [1:3] 3 2 1 .. ..$ Attr: Factor w/ 3 levels "A","B","C": 3 2 1 ..@ polygons :List of 3 .. ..$...

When I pan north, the map goes out and I see the white background of my HTML. I want to pan vertically and the map to block when it reaches the top (or bottom, respectively). I have tried to put bounds, but this solution puts also bounds horizontally. I want to be able to pan infinitely left or...

This video shwos how to build free interactive map with google fusion tables using QGIS. أكثر...

I have a series of vector files that I intend to convert to "DXF" format. But after the conversion, only contour lines(white lines in the red polygon) are not displayed in Autocad. I read some related Q&As in this site but could not get a satisfactory answer. Is the problem stem from the...

I have a table in a native SQL database (no geodatabase) with cca. 300 000 records and 18 fields. Two of the field contains projected X and Y coordinates, and one field contains geometry with SQL geometry type.Based on this data I would like to create and update a feature class on a daily basis...

I have a map with graduated symbology, with 328 unique values. I would like add a legend to my map (as in the picture), illustrating that light blue indicates low values and dark blue high values. I have done this in ArcGIS before. Is there a way to do this in QGIS as well? Thank you for...

I am confused about why if I open a band with GDAL I get, for example, band.GetMaximun(): 1000, but if I do ReadBandAsArray I get myArray.max(): 1200 (the same if I do np.max(myArray)). Does someone knows why this difference? أكثر...

I have a shapefile of Ireland. I know I can calculate distance to the coastline using the near tool. But is it possible to calculate distance to the coastline using the shapefile? I do not know how to tell Arcmap to use the coordinates of the island itself, or if that is possible. I am not...

I would like to open up a new settlement with fiberglass and i want to know how much route in meter I need to open up each house in this settlement. For this purpose I will use the network analyst in ArcGIS. The problem with this tool is that it always calculates the distance between the...

سبق و عرضنا في عدة مواضيع سابقة عليكم عدة ملفات إكسل لمجموعة من المهام المنوطة بالمهندس المدني و تكملة لنفس الموضوع أقترح عليكم الإستفادة من مجموعة ضخمة مكونة من 437 شيت إكسيل في كافة مجالات الهندسة المدنية و تشمل جميع المواضيع كما بالصورة مضغوط بإمتداد RAR Analysis Bridge Column Drowing Layout...

I have created a form and added an attribute as a Text widget in the Roam manager. Now I'm trying to restrict the input to be an integer between 0 and 999. I want the field to stay "empty" (or "blanc") as long as the user enter a letter and only to accept integers (but not more that 3...

Re: Network Shapefiles Shouldn't be any issues accessing the shapefiles from a network location as long as the shapefiles are not being modified by another application while your app has them opened. Mapping the files in memory won't release any file locks as the file mappin... أكثر...

I would like to use Relationship classes in place of Joins. My relation is simple, feature-to-table, one-to-one. I seem not to find a way to append the related table attributes to the origin feature attribute Table. Rather, I can switch to the related table using the Relaetd Table button, but...

to zoom to a rectangle in ARCGIS i always clicked and held the mouse wheel while pushing the control key. This was a very efficiant way for me to navigate through a map. Is there anything similar in QGIS that avoids to select the tool? THX in advance for your help! أكثر...

I installed GeoNetwork 3.0.0 some days ago and testing it at the moment. The look of the page and the administration changed completely and the manual is not ready yet for the new version.Therefore I have some problems. I cannot upload any file to the system, e.g. thumbnails, logo.I already...

How to remove or delete column fields in a shape file using python? أكثر...

Salut à tous, J'ai sans doute bien mal cherché ... mais je bloque sur une requête qui me parait simple. Je suis équipé d'un WebVilleServer d'Imagis, qui tourne sous MapServer avec une base PostGIS. Dans mon .map, je souhaite faire une requête dans une table pour n'afficher qu'un "type" de...

kuba-konczyk: how you can learn to control it? #gistribe has a lot of nuggets of wisdom, insights that come out of the conversation.* One of the recent one was a series of tweets about the importance of data:*https://storify.com/KubaKonczyk/gis-is-data-gistribe-10-06-05* Data is in the...

I have a shapefile showing the distance from each village to its nearest health facility. How can I represent this as a continuous map in ArcGIS 10.1? أكثر...

I'm using the NED 1/3 arc second data set to generate tiles to zoom level 15 for Cape Canaveral in Florida, and finding that the terrain looks accurate in appearance, but the elevation is too high by roughly 30m. The Cesium AGI STK World Terrain set uses NED data as well, and I can see the exact...