Questions tagged [alignment]

The property of two different things being coincident or making them so.

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Alignment in ArcMap

I have a lot of linear objects (green), the ends of which must match with some boundary (brown). I can do it manually using a snapping but there are too many lines. How can I do it automatically? I ...
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Duplicating Agisoft Metashape Projects

I am currently processing data for my Master's thesis and I need to process the same datasets many times with small changes each time. For example: Not using GCPs Using 9 GCPs Using 1 GCP Using RTK ...
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QGIS WMS layer alignment with OSM

Please bear with as I'm a complete novice when it comes to GIS and QGIS, so some of the terminology may be incorrect. I am using QGIS as a WMS client to test my WMS server. I am trying to overlay a ...
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Aligning vector layer with basemaps (OSM + Google Satelite) XYZ tiles (from QuickMapServices) using QGIS

I have this misalignment issue that I could not solve by use of answers to similar questions on GIS Stack Exchange. Any suggestions as to how to proceed ? Background QGIS version 3.24 I have two ...
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Raster images of QGIS 1.8 are no more aligned and are floating around after conversion to QGIS 3.22.3-Białowieża

I had a project with a lot of raster images aligned over a bigger raster file in QGIS 1.8 when I open the project in QGIS 3.22 MacOS Catilina all the raster are not aligned anymore and they are ...
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Aligning rasters in QGIS modeler

I want to align several rasters during a QGIS modeler procedure (currently QGIS 3.16). In QGIS Desktop I can do this using the "Align rasters" tool given in the Raster submenu: In the ...
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Misalignment of imported rasters using QGIS

OS: MacOS 12.0.1 QGIS: 3.22.3 Project CRS: EPSG:4326 Raster CRS: EPSG:4326 I am new to QGIS (and GIS to some degree). I am following QGIS training here. After importing the 4 rasters into the project, ...
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Cell grid not aligning in QGIS when raster calculator is used in model

I am attempting create my first model to automate some of my workflow. However, when using the raster calculator, the output raster is not aligned with the input one despite being referenced to the ...
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Raster Coordinates after Geoferencing

I have an orthophoto output from drone deploy that is out by about 3m. When I try and georeference the raster using QGIS georeference tool, my raster disappears to the other side of the planet. ...
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Draw polygon with specific dimensions [closed]

I'm a beginner with QGIS, and I'm trying to draw a polygon that is 10m x 10m with 90 degree angles placed along a line, and centred around a point on that line. I don't know what projection to use (I'...
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In Earth Engine, when exporting to drive the raster is shifted

The Problem: Two identical Landsat scenes were downloaded from two different sources. USGS Earth Explorer and Google Earth Engine. Although both of the scenes are in the exact same coordinate system (...
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How to align set of satellite images?

I have a problem my set of four satellite images (4 different years of observations) of the same area are not aligned and more than that I see that there is a distortion problem also. I found this ...
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Fix extent of R rasters (grid_density output) to match

I have two rasters that are the result of the grid_density() function from the liDR package. With those rasters I want to compare point distribution of subsets of a LAS file. My problem is, that I get ...
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Align two vector shapefiles (cells) - ArcGIS Pro

I want to align two vector shapefiles that both are represented by 100m by 100m cells. Thereby, the pink cells have to be placed on the green/yellow cells (see picture below). I already executed the &...
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How to automatically align the edges of features to other features from an other fetaure class?

I have two feature classes containing polygons. One (lets call it A) covers the whole area of interest without any gap or overlap. The other (B) has polygons scattered over the area. The features of B ...
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PostGIS align borders of countries

New to PostGIS. I have USA & Canada vector data. The borders have small gaps or overlaps. I want to use PostGIS to align one border to another border. We are free to add or remove vertices. I have ...
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Aligning rectangular grid with raster pixels in QGIS

I want to create a 1000m grid over a 1000m land cover map such that the grid cells are perfectly aligned with the raster pixel underneath. But when I use the Create Grid function in QGIS, the cells ...
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Wrong position when reprojecting layers from EPSG:32651 into EPSG:4326

I have a vector layer on my project that I digitized from a geologic map. I originally projected it on WGS 84 UTM Zone 51 North (EPSG:32651) when I was digitizing. I tried reprojecting it to WGS 84 (...
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Non-alignment of vector and raster layers in QGIS

I have a vector map layer, raster climate data and added a delimited text points layer. My problem is that the raster extent does not quite match the edge of the vector map, and as a result, some of ...
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How can I align the pixels with using GDAL and Python?

I am trying to use Python/GDAL to align different GeoTIFFs that I warped (gdal.Warp) to the same SRS. My problem is one of the images is rotated, the pixels do not overlap perfectly, which is ...
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Aligning two rasters of same resolution perfectly on top of each other in QGIS

I have two rasters, that I managed to make in the same resolution using the 'Raster tools --> Resampling' tool by SAGA. The pixel sizes are exactly the same, however the new resampled raster, in ...
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1 answer
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Geoplot/GeoPandas missalignment in Windows (no Anaconda)

I am trying to familiarize myself with creating geographic plots in Python using geopandas and geoplot. So I am working my way through tutorials and documentation. Currently, I am looking at the user ...
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2 votes
1 answer
391 views

Fit polygons in another polygon

Is there any way to perfectly fit the blue shapes into the green shapes? I have over 7k blue shapes and 550 green shapes and I would love if someone could help me to avoid me doing all the fitting ...
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Elevation profile that can follow the change in view of Atlas page in QGIS

I think I have read every thread on QGIS profiles in the stack and I cannot find a way to create a profile that can be produced in context on each page of an atlas print. I can create an image for ...
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Why do two rasters with the same spatial reference not align?

I have two rasters which have the same spatial reference and cell resolution but they are slightly out of line? Any idea why this is and how I can align them? I am using ArcMap 10.4.1
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Aligning Polygons to Margins in Data Driven Pages

I'm creating a data driven page of polygons (forest subcompartments) on a basemap in ArcMap 10.4.1. The scale required for outputted maps is predefined (1:5,000). Output is multi page pdfs. Users of ...
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7 votes
2 answers
439 views

Aligning line with closest line segment in PostGIS

I've got a road network dataset and a dataset that consist of multiple disconnected lines of varying lengths in PostGIS. Most of these lines are (largely) parallel to the road network, but the ...
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Optimal alignment of satellite images taken separately over the same geographic surface

I am given two satellite images of a location which has been subject to a natural disaster, one before the disaster and one after. I am given bounding boxes for the images.The images have been ...
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1 answer
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ArcGIS align grid of 10km squares with grid of 1km squares

I have a pre existing layer of 1km x 1km grid squares, which is aligned with the 10km squares of the British National Grid: I want to create another 10km x 10km square grid on top to highlight the ...
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Aligning pixels for using GSW as mask layer with Landsat 8 and Global Surface Water (JRC) Layer

I want to isolate some surface water areas on Landsat 8 images by using the Global Surface Water dataset in GEE as mask. After mapping both in the Editor I realized the positions of pixels of GSW and ...
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Aligning two maps with different projections in QGIS

I am trying to add historic borders to a modern blank world map. The files I have are all bitmap format and the historic borders are in separate regional maps (Africa, India, North America, Western ...
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Aligning points in WGS84 to centroid of features in projected CRS (EPSG:28992) using QGIS

I have a set of points in WGS84 representing the rainfall over the Netherlands, as acquired by radar towers. These points represent the centroid of a pixel in WGS84 and they are separately by (roughly)...
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Methodology for boundary inspection

I have two datasets: parcel layers an overlaid boundary layer When the boundary was initially drawn it was never snapped to the parcel boundaries. We now need to conduct reviews around the entire ...
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1 answer
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Align images with self-defined CRS in Google Earth Engine

I have uploaded a dataset to GEE and I want to align every image in the collection to have the same geographic extent as the first image of this collection. My code so far : var ref_image = ...
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How to make sure that vector and raster data align correctly in ArcGIS?

I have a shapefile of European states (open-access from here: http://tapiquen-sig.jimdo.com) and DEM data downloaded from Copernicus. Europe states vector is in GCS_WGS_1984 (Datum: D_WGS_1984, ...
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Summing data from a smaller boundary shapefile to a larger boundary shapefile if the boundaries do not align in ArcGIS Pro?

I have a census tract boundary shapefile for the province of BC, with around 620 polygons, varying in size. I have another boundary shapefile, BC service areas, this one has much larger polygons and ...
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1 answer
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Making raster layers calculated from point feature congruent?

Raster A and Raster B are both calculated from the same point feature. Raster A results from Natural Neighbor Interpolation in the Spatial Analyst toolbox. Raster B results from Point Density in the ...
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2 votes
1 answer
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USGS Relief map (GeoTIFF raster) misaligns with vector layers (QGIS)

I'm trying to correct the alignment of three layers (described below), but I'm not entirely sure how to go about re-projecting raster layers to my other layers. Ultimately my goal is to clip the ...
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1 vote
1 answer
156 views

Closest Facility routes do not align with network dataset

I am running both Service Area analysis and Closest Facility analysis using the same network dataset, StreetMap Premium 2017R3. The service area lines exactly line up with the underlying street ...
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2 votes
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GridMetrics output does not align with base DTM?

I am trying to derive grid metrics from LiDAR (.las) file using FUSION's GridMetrics tool. My problem is that the output raster from GridMetrics does not align with the base DTM used to run the tool. ...
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2 votes
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How to resize a raster to the same extents of an equivalent raster?

So here's the problem I have a georeferenced orthomosaic which I used to generate land cover data. During the pixel classification phase of land cover study, I had to use other softwares to help me ...
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3 votes
1 answer
425 views

Getting source bounds when filtering LAS using PDAL?

I'm using PDAL to filter out non ground points to create a DTM along with a DSM also made through PDAL to create a Canopy Height Model using this method. My workflow looks like this. #!/bin/sh # ...
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Custom Projection and Alignment of Large-Scale RGB Time Series Mosaics

We are running an experiment to observe time to germination and growth in potato plants in a greenhouse. To that end we have built a gantry system equipped with an RGB camera to capture the plants ...
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Raster alignment doesn't produce aligned results

I have two rasters with different extent and resolution, same coordinate reference, from two different surveys - one RGB and one NIR - takes on different times. nir_in class : RasterBrick ...
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3 answers
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Align one polygon boundary to another boundary

As visualized in the picture as an example, two polygons should be aligned to each other. The boundaries of the green polygon should not be changed. The blue polygon may therefore only be adapted to ...
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4 votes
3 answers
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Can not get the connecting line to align with label in desired place in QGIS 3

I have labelled a points layer by defining a line between points and labels, so as I could remove the label to outside the map area (Figure 1). Using additional columns in the points layer attributes ...
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Aligning polygons to another polygon?

I am drawing the habitat map within 500 Meters boundary. Once the works area changes, I need to update all the habitats (polygon) to align with the boundary (another polygon). Recently, I am using ...
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Based on what rule does Raster Calculator produce output when the input rasters are misaligned?

Taking into account the following assumptions: we have 2 rasters (satellite images from different satellite platforms) of the same pixel size, same coordinate system, little bit misaligned, Snap to ...
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320 views

Points not at right location

I know the questions have been asked, but I can't make it through! So, I have uploaded a CSV with my Lat/Long coordinates (in degree decimals). Every points should be located in Quebec, but it all ...
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4 votes
1 answer
640 views

Align the border of a polygon to overlap the border of another using QGis

I have two polygon layers. As seen in picture, the border of two layers do not fit. I want to align the border of layer 1 (blue) to overlap the border of layers 2 (pink). How to do it with QGIS?
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