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I tried to use polygon objects (in vector) to extract NDVI value from the raster image deriving from Landsat 8. An error message occurs when I run Zonal Statistics as follows: 'NoneType' object has no attribute 'exportToWkt' See log for more details". The process cannot be processed after 18%...

Some time ago a collaborator, Mario Fèvre, from TreCC company, started a new project to generate a new icon set for gvSIG with the aim to have a friendlier interface.** This project not only consist in designing that new icon … Continue reading → أكثر...

Nikhil joins the data team to strengthen our work on improving datasets like OpenStreetMap based on satellite imagery and customer feedback. Nikhil is bringing his passion for open source and experience managing network equipment and software at Tech Mahindra. Welcome Nikhil! أكثر...

This question already has an answer here: How to enter date with arcpy.GetParameterAsText with arcpy? 2 answers Here is my date variable in the class "rropthema": erfdat ="'31.12.2007'"Here is the...

I am currently making a FeatureLayer from a resultset. The feature layer seems to work properly and will display on the map however when I choose "select all" on my feature layer I get the following automation exception: AutomationException: 0x80004005 - Unspecified errorat...

Bonjour à tous et à toutes, Je vous mets dans le contexte de mon sujet. Je suis stagiaire au sein d'une communauté d'agglos et je suis chargée de leur montrer un début de carte interactive. Après avoir essayer PgAdminIII qui ne veut pas importer ma table, GéoServer qui ne peut qu'afficher...

I'm trying to run a SQL query to search for a term and a users location. Individually each SQL query works fine but together I receive this error #1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AS...

I am in the process of developing a technical GIS competency matrix for new employees. The matrix will be used not only to assess new employees but also to monitor employee development.The matrix should contain everything from general GIS concepts to advanced server-side GIS and Web-GIS...

Say I want to find 20 closest business near me. My table structure is like this: BusinessID varchar(250) utf8_unicode_ci No None Browse distinct values Change Drop Primary Unique Index Fulltext Prominent double No None Browse distinct...

I'm storing a large list of lnt/lat points in a MySQL database. At the moment these are projected points for the UK in M, but in the long term I would like to make sure that I can store the coordinates of points for all over the world. What datatype should I use? I started using...

Re-post of a question asked on Stack Overflow when it was suggested this would be a better forum. I'm trying a little experiment at pushing a data set which is not geo-spatial but fits it quite well and am finding the results somewhat unsettling. The data set is genomic data e.g. the Human...

In the last month the German website Spiegel-Online showed some nice examples of big-data combined with geodata. Geodata get’s more important with every GPS-enabled device that is sold, form that will store your address, IP that is monitored, customer in a global market. Let me Introduce you...

I need to transfer from individual point Z value into the intersecting line vertex.(from point z to line vertex z, manualy Editing features that have z-values for me inappropriate, because many points) Maybe you have encountered this and have a way of doing things? أكثر...

I would like to know if there is any way/tool of using geoprocesing queries like the ones you use with POSTGIS but without the need of having an actual database server available. The particular aplication in this case is the linear referencing of arbitrary points over a set of linestrings...

I have a polygon shapefile and raster layer. How I can calculate the elevation and area (Z~F) relationship for each polygon ?Thanks so much for your helping ! أكثر...

I am using the "Go to X,Y tool" on Arcmap 10.2.2 and the Units on the tool are disabled, Eg. Decimal Degrees etc. I can't seem to get it enabled in order to map out the coordinates I have. Is there another way to do so? أكثر...

Estilo Ignaciano: vivencias y exigencias أكثر...

I have a good-quality, precise 3D scene reconstructed from photographs/video by VisualSFM. All camera parameters, including 3D position and lens details, are known. Now, that the hardest work has been accomplished, I'm sure that obtaining real-world dimensions of the model is easy... only how...

In CartoDB, we have a table of chapters that make up a national organization. Each chapter record has a polygon that defines the geographical area that the chapter covers. The area a chapter covers is defined by zipcodes and which zipcodes are included in a chapter can change over time. I...

Where can I find shapefile (or other vector) data for US private parcel boundaries (such as for a plat map)? أكثر...