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I would like to merge polygons (parcels) which are inside the white road (which is a hole) -- see the picture. The way I'm doing this is certainly a bad way because later, in my script, I have this error: AttributeError: 'GeoSeries' object has no attribute '_geom' pa_fu =...

kemajuan dan pembangunan bidang ekonomi أكثر...

Landsat 5 values change from normal NDVI -1 to 1 when created in Multispec as a 32 bit signed data image. When adding the raster layer in QGIS, the value range changed to 0-255. How does one properly export the image in Multispec and import the image into QGIS to maintain the results obtained...

I am trying to objectively quantify or provide some form of indication that could point toward the amount of sunlight or solar radiation onto a DEM over a day. In my limited knowledge, the way I could perhaps use an indirect indicator would be the sky view factor (e.g. lesser SVF = lesser...

Whenever I try to open a MapInfo .TAB file that contains text objects in QGIS, the text objects are converted to point objects. Any help, please? أكثر...

I am using ArcGIS ArcMap 10.2. I have a shapeless of polylines and want to split them each line into 100 m segments. I can see under the editor toolbar the split tool and that can divide each line into equal parts and accepts an input distance. My issue is that my shape file contains 1000's...

I'm writing a custom Processing script that needs to know which database connection a vector layer resides in. I can't find anywhere in the API a function to return this information from a layer. So I guess I have two questions: Is there a Python function (either from qgis.core or from...

I am attempting to calculate the intersection of two circle on the Earth with a given latitude, longitude and radius. I started with this post. These circle will never be more than 100 km in diameter and will normally be "close" to each other, meaning two intersecting points for the pair of...

I have a shapefile of U.S. states. I want to create a feature layer from it so that I can do a Near analysis with it. Suppose that I am interested in the Georgia boundary, but only the part of Georgia that touches South Carolina? How could I extract just that segment? Or, suppose I am...

(Note to readers: GeoCurrents will soon be taking a short summer break. Regular posting will resume in mid-August. But before the pause begins, I have one more post, which discusses the possibility of a seemingly impossible map. ) The map posted to the left appears to be bogus, as it depicts...

I don't see the GRASS toolbar in QGIS 2.10 (Pisa). There are still GRASS commands in the Processing toolbox. I know there was some upgrade of GRASS for 2.10. Is the toolbar not available anymore? If so, how would you make a mapset, etc? أكثر...

On Monday this week the NSGIC Board of Directors approved the 2015 -17 Strategic Goals. The development of the strategic goals is the result of many hours of discussion and interaction by leadership.* It all began in February with a member survey and a planning retreat as part of the mid-year...

Public-sector GIS projects in California were recognized with a Special Achievement in GIS (SAG) award from Esri during the User Conference. أكثر...

Various reports/news from the Esri User Conference. أكثر...

In a previous post we detailed how to add Vimeo videos to your Story Map Tour directly from the Vimeo website. This post details how to add videos that leverage Vimeo’s autoplay and looping by using URLs obtained via the Vimeo Embed sharing option. Step 1: Obtain the link to the Vimeo video...

I have found solutions for this problem in other versions of QGIS, but none that apply to the newest version 2.10.1. Whenever I try to import a Natural Earth Raster projection that is a prj file I get an Invalid Data Type error. I have tried using the old solutions to specify the file I'm...

The thing is that I have four styles I have created in QGIS trough the GUI and saved into a postgresql database. I can see them in the table named layer_styles I have seen similar questions asking to load from qml file, or even from a database, like that but it looks as if I need to get a...

Story Map Tour*is ideal for creating sequential, place-based narratives. These are typically in the form of a series of geotagged photos and captions linked to an interactive map, but they can also include videos, web pages, scenes, and much more. Vimeo is a popular video sharing site that...

The highest peak in the North Cascades was visibly affected by less precipitation falling as snow in 2015. أكثر...

After reviewing all the possible related solutions to my problem, I could not piece together a solution to process and import multiple sets of groundwater analytical data that contains different data types from CSV format (example below) into ArcGIS 10.1 for heat mapping (or generating...