Questions tagged [dimensions]

A measure of spatial extent, especially width, height, or length. (See the full wiki for additional meanings.)

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Automatically adding dimensions to polygons in QGIS [duplicate]

Is it possible to show : lot # area dimensions of the polygon's lines highlighted polygon with the only input being the lot #. The result should look like this:
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67 views

Changing pixel's dimension (raster) on QGIS

I would like to change the size of the pixels from 2.5 to 10. How can I achieve this?
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40 views

Rasterio reprojection, changing pixel size: results in crazy pixel values

I'm trying to project a geotiff with 789x789m pixel size to 100mx100m using another geotiff as a template. Everything seems to work except that the output pixel values, shown when I open the file in ...
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Dimension Difference preventing plot of series

I have performed linear regression between the 'ro','pr' series (runoff,precipitation) and printed the chart. I want to print the linear fit on top of it and get the R**2 value, but dimensionality ...
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390 views

Image dimensions in Google Earth Engine

How can one get image (band) width and height on the server side? On the user side you do it with image.getInfo().bands[0].dimensions, following Extracting information from Google Earth Engine image ...
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1answer
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Creating dimension feature class that displays inches in ArcGIS Pro

I have a line feature class in State Plane survey feet. When I create a dimension feature class I simply cannot figure out how to get the dimension to display inches. There seems to be a button for ...
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Adding timestamp to NetCDF xarray dataset

I am new to working with NetCDF datasets and Xarray in Python. I have an xarray dataset made from 100 TIFF raster files: As you can see there are 100 data variables, that are essentially the ...
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1answer
80 views

NetCDF get_dims too many values to unpack

I am working with a NetCDF file (.nc) - 600+MB. import netCDF4 from netCDF4 import num2date import numpy as np import os import pandas as pd # Open netCDF4 file file_location = '2m dewpoint ...
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Collision analysis with line diameter in QGIS

I have some lines representing pipes. They have Z value in the attribute. I need to check if they collide with each other. So I want to know where they intersect/collide in height. I was wondering if ...
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44 views

Alter Rectangle Polygon by Keyboard to Have Specified Dimensions (eg 1km x 1km)

Here is my current workflow. Press "New Shapefile Layer" with "Geometry type": "Polygon" Press "Toggle Editing" Press "Add Rectangle from Center and a ...
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1answer
79 views

Raster data, basics: where is the information?

A long time ago I worked a bit with ArcGIS and shapefiles but never with raster data. Now, I have a raster dataset that I use in QGIS. Ok, no biggy I thought. Just convert it to shape/ vector and all ...
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2answers
967 views

Unable to create Dimension Feature Class

I am trying to create a Dimension feature class within a new geodatabase. I right-click on the geodatabase and select the New, then Feature Class. The New Feature Class window comes up and I can ...
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Is there a tool that shows dimensions during editing?

Is there a plugin or tool providing following functionality: I select 2 points (or vertices) - it shows the length between this points. When I edit the point (or move vertex) the length automatically ...
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Dropping z dimension programmatically

It seems there is no geoalgorithm to drop z values in the QGIS processing toolbox. Can this be done programmatically using the Python console? At the moment I have to save the layer with unchecked '...
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2answers
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Calculating the fractal dimension of a line segment

I have a shp file with hundreds of features that represent clipped segments of coastline. Each segment is made up of many vertices (dozens, perhaps even hundreds). (FYI, the segments were created by ...
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1answer
2k views

Adding dimensions to map in QGIS?

I would like to add dimensions to my QGIS map. It can be in the editing/drawing space or the print composer. I would like to see how long a line is, for example 3,5 m. I tried a lot of different ...
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2answers
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Moving dimension text in ArcMap?

I am labeling a 2-D area with several intersecting dimension labels, and I would like to move the dimension text ('512.64 ft') over to the sides of the polygon to make it easier to interpret. ...
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1answer
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Why do ArcMap dimensions disapear when I close and reopen a map?

I am trying to use the dimensions in ArcMap but after I dimension a map then close and reopen the map the dimensions are gone and I get a COM error, cannot initialize COM component when I try to edit ...
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3answers
2k views

Creating polygon with exact measurements in QGIS 3

I want to create a square in QGIS 3 with dimensions of 50m by 50m exactly. How can I implement that?
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1answer
2k views

WMS with time dimension

I set up a layer with "time" dimension in GeoServer, but I'm having quite a hard time figuring out how to use it... It is a vector layer with some polygons in it. This is my layer configuration for ...
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Need to convert coord_dimension from 4 to 2. File contains 2D polygons

I am working with PostGIS Bundle 2.5 in PostgreSQL 11. I loaded a MultiPolygon file from a geodatbase and I need to append the geometry table to an existing geometry table. However, the coordinate ...
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1answer
495 views

Why does Germany look equally as large as Afghanistan on Google Maps?

I snipped Germany and Afghanistan from the same Google Maps view: They look like they are about the same size. Here is the full screenshot: The problem: Afghanistan has an area of while Germany has ...
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2answers
861 views

How to read geopackage tiles using Geotools

I want to read tiles from a geopackage file using Geotools (v. 17.0). I found the class GeoPackageReaderTest.java on GitHub and modified the example to read tiles from my file: // try to read ...
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2answers
14k views

Conversion from 3 dimension geometry to 2 dimension

I have a Point table in which the geometry column contains both 3 dimension and 2 dimension values.I want to convert this 3 dimensional geometry to 2 dimension.Is there any function in PostGIS? Please ...
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1answer
181 views

OpenLayers 4 - draw or move a vector geometry reprojecting its vertices to keep dimensions

I have to draw a polygon on a vector layer on a simple OpenLayers OSM map (WebMercator). What I know: the center (lat/lon) of this polygon the lengths (in meters) of each side. I can pre-calculate ...
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What's the difference between coordinateDimension and spatialDimension?

The OpenGIS standard mentions three methods to query the dimensions of a Geometry: dimension(): the inherent dimension of the geometry: 0 for Point 1 for Curve 2 for Surface coordinateDimension(): ...
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339 views

Real dimensions of square buffers

I have a shapefile with points and I want to create square buffers around my points 6x6. My coordinate system is in meters. I use R and for the buffers I use: bufers=gBuffer(file, width = 6,capStyle="...
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558 views

how to change the height of info window in carto

I have inserted a chart in info window for every feature of a polygon layer in Carto. I want to change the height of info window in order to be looked as a whole without the need of scrolling. In info ...
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3answers
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Converting projected coordinates to lat/lon using pyproj fails

I have been trying to work on this issue on myself mainly referring to this post (Converting projected coordinates to lat/lon using Python?) but still didn't succeed. I have some 2-D data function ...
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2answers
912 views

Specify default width and height used by Geoserver's layer preview page

Currently whenever I try to preview any WMS layer under Geoserver's layer preview page &width=768&height=339 automatically gets set in the request. I'd like to change these values. Is there ...
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60 views

Converting dimension feature class into standard feature class using ArcGIS Desktop?

I have found very little information regarding if it is possible to convert a dimension feature class into a standard feature class. This would hypothetically be done in an SDE environment. Our theory ...
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3answers
9k views

Stack rasters with different origin, dimensions and resolution in R

I have three raster files with the same extent and CRS, but with different origin, dimensions and resolution. r1 class : RasterLayer dimensions : 3020, 3043, 9189860 (nrow, ncol, ncell) ...
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1answer
1k views

ArcScene 2D export

I'm submitting a paper to PlosOne, and have been using ArcScene to produce my 3D mapping. However, I'm struggling to comprehend quite how to meet their image requirements (http://www.plosone.org/...
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1answer
2k views

Using Dimension Feature in ArcGIS for Desktop?

I would like to use the Dimension Feature tool in ArcGIS - this button as I want to have a label on every side of some polygons (they are all reasonably simple polygons). When I click on my polygon ...
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1answer
463 views

CRS Reprojection by Warp or by Saving

I'm transforming a WGS84 CRS to ETRS 89 using QGis. When I reproject the raster using via raster transformation or via GDAL Warp my pixel change from 30x30m to 26x26m which shouldn't be a problem as ...
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1answer
1k views

Does line feature have one or two dimensions?

In the coursera class fundamentals of gis it's said that lines are one-dimensional feature and polygons are two-dimensional. Is this correct? if the line has a curvature two dimensions are needed to ...
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2k views

Showing dimensions on polygons in QGIS?

I have a shapefile that contains all of the property parcel lines in King County, WA. We are currently displaying this data through mapbox on our site with no issues. We would like to be able to show (...
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224 views

Multiple dimensions problem in importing kml files

When I import multiple kml files into R by using readOGR in a loop, I came across the problem denotes as follows Error in ogrInfo(dsn = dsn, layer = layer, encoding = encoding, use_iconv = ...
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1answer
4k views

How can I strip out Z values in PostGIS?

How do I get rid of the Z dimension in PostGIS? Specifically, I have some MultiPolygonZs that I want to copy into another table as MultiPolygons. I don't care about the Z values - it's okay to just ...
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2answers
1k views

Multi-dimensional points in PostGIS

I have experience in PostgreSQL but I am fresh new in PostGIS and I can see how quickly would I like it. I have extensively worked on time series and now I am discovering the spatial side of my data. ...
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1answer
75 views

Import 2D GML file via OGR2OGR fails with “Did not get at least 3 values or invalid number of set of coordinates”

I have a GML file that seems to mix <gml:posList srsDimension="2"> and <gml:posList> records. OGR2OGR (understandably) crashes when reading these files: ERROR 1: Did not get at ...
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5answers
2k views

How to change dimension annotation style in ArcMap 10.1?

For some reason, the option to add a "New" or "Import" style is grayed out. I tried creating a different dimension annotation feature class with the style I want, and then copy and pasting the records....
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1answer
217 views

How to set coordinate dimensions in Django GDAL API?

The Django GDAL documentation for coord_dim says: coord_dim Returns or sets the coordinate dimension of this geometry. For example, the value would be 2 for two-dimensional geometries. But how do I ...
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1answer
1k views

How to add time and elevation dimension attributes to Geoserver rasters?

In geoserver, when I edit a postgis raster layer and click on the Dimensions Tab, I can't enable either of the Time or Elevation dimensions. The following message appears next to each of the ...
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0answers
514 views

R raster stack 4 dimensions

I am trying to create a raster stack / brick from a list of ncdf files with the dimensions 160x160x24x1). r = stack(files) This gives me a raster stack but without the 4th dimensions which is ...
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1answer
3k views

Real-world dimensions of a 3D object in VisualSFM or MeshLab

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 ...
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3k views

Drawing features with specific dimensions in ArcGIS [closed]

I am having some issues drawing transect lines in ArcGIS. I need to create some lines that have specific lengths (20m and 30m). My Map units are set to 'meters' and coordinate system is NAD UTM 10. ...
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AutoCAD dimensions units

Not sure if this question belongs (Please tell me if it isn't) I have an AutoCAD drawing that is in centimeters, and every time I insert a dimension, it appears in centimeters (which makes sense ...
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1answer
532 views

Select linestrings containing points with duplicating M coordinates in postgis

I have a table of LineStringM geometries. Some of lines have points with same measure (M coordinate). This is a bug in initial data, that I want to clean somehow. So I need to: 1. Select all records, ...
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1answer
4k views

PostGIS error reads “Geometry has Z dimension but column does not” [duplicate]

I try to store a polygon in GeoJSON format into my PostGIS table. Both are using the CRS EPSG:3857. This is how the polygon is defined. Note that I put in some whitespace to make it more readable. { ...