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Questions tagged [spatial-data]

46 questions
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readOGR: error in evaluating the argument 'x' in selecting a method for function 'merge': length(dsn) == 1L is not TRUE

I'm attempting to adapt a function written by a coworker, but I've hit a point where neither of us know how to solve the issue. Generally, the function reads in several different shapefiles kept in different directories, then merges them all with…
kbill
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Is there a way to get around this problem in my Road network analysis in R?

so I am having issues with a road network analysis I am conducting, which is aiamed to look at how far away each park entrance is from each postcode centroid in the London borough of Southwark. However, I have experienced errors in my analysis which…
hussain
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Possible ways of selecting x/y points that are on or close to a path in R

I am trying to extract data from a line of points which are part of a 2D map that consists of 5,000–6,000 points. I used to be able to do this using the Point Profile Tool in ArcMap but am now looking for a way to do it in R instead, if at all…
Nik
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Convert Geometry to Geography

I want to convert geometry to geography in SQL Server; I followed this article: https://blogs.msdn.microsoft.com/edkatibah/2008/08/19/working-with-invalid-data-and-the-sql-server-2008-geography-data-type-part-1b/ Here is my query: INSERT INTO…
lyly
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The Spatial Data for layer... in the map... is not valid. Specify Spatial data that is data type SqlGeometry or SqlGeography. Report Builder 3.0

I am editing the data set for a map report programmatically in VS 2010 by changing the dataset queries in a baseline report converted to xml, then displaying the new report, converted to .rdl in Report Builder. When Report Builder is first launched…
jas
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C# gdal read mssql spatial to geojson

Gdal.AllRegister(); //为了支持中文路径，请添加下面这句代码 OSGeo.GDAL.Gdal.SetConfigOption("GDAL_FILENAME_IS_UTF8", "NO"); //为了使属性表字段支持中文，请添加下面这句 OSGeo.GDAL.Gdal.SetConfigOption("SHAPE_ENCODING", ""); …
dlsyaim
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Algorithm for identifying non-ambiguous clusters?

Clustering algorithms usually take into account that what might be perceived as a reasonable cluster by a human being is ambiguous and the computed solution is supposed to generalize and predict well. This is why I am hesitant to just use the…
Raffael
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Direct and indirect effects of spatial panel durbin model

I'm asking about the estimation of direct, indirect, and total effects of spatial durbin panel data modeling. As far as I know, there is no direct package of doing the estimations. So I generate the spatial lag of independent variables myself. Here…
Chen Luo
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How to use K-Means clustering with geography data in SQL Server

I have a table named input_points in SQL Server that contains a collection of points represented in geography data type, with two attributes: id (which allows NULL) and Location (which is in hex format). I want to use K-Means clustering algorithm to…
AmrShams07
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Predict function in R returns a different value from fitted.value in model object

I am using lagsarlm in spdep package in r to estimate a spatial Durbin (mixed) model by m1 <- lagsarlm(f, data = d, wlist, type = "mixed") where f is my designed model of dependent variable and independent variables, d is a set of data points…
Chenghao Duan
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How to conduct spatial data analysis with netCDF land use data and Key Biodiversity Areas (.shp) data

I have a netCDF file ("SSP119.nc") containing information on land-use change from 2015 to 2100, inclusive (source: https://luh.umd.edu/data.shtml). I also have a shapefile containing polygons of global Key Biodiversity Areas (KBA). I want to know…
Conor Ó Beoláin
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Upload spatial data in GDB or geodataBase format in ASP.NET Core code first

I have a database in geodatabase(.gdb) format with several layers inside. I entered the layers in ArcGIS software to gdb. Now I want to automatically create the table for data attribute of that layer in the sqlserver database when each layer is…
Mohammad Ghanezada
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Selecting values from a 4d tensor with a 3d tensor

I've recently run into this problem in pytorch when working with 4D tensors which should be indexed with 3D tensors. Let's say we have this 4D tensor: possible_values.size() torch.Size([2, 5, 5, 4]) where: dim 1 = batch dim 2 = x_axis dim 3 =…
00sdf0
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ABP.io + NetTopologySuite = True?

How to handle spatial data with abp.io framework (SQLServer and EF Core)? Any recommendations? I guess one can have NetTopologySuite in the Domain project, but it does not feel DDD correct to do so. Please tell me if you have any experiences with…
kungcc
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R Programming Help: Error in .subset2(x, i, exact = exact) : no such index at level 3

I am in need of assistance, any guidance is greatly appreciated! My goal is to create a function that computes the spatial moving average of adjacent neighbors of a polygon shapefile utilizing the existing function poly2nb(). The function must be…
affectionate_eye079
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