Questions tagged [alignment]

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

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28 views

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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2answers
136 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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70 views

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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1answer
28 views

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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1answer
43 views

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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1answer
57 views

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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42 views

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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39 views

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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1answer
56 views

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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1answer
81 views

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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1answer
34 views

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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1answer
35 views

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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1answer
65 views

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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1answer
49 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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1answer
81 views

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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168 views

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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1answer
187 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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1answer
31 views

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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43 views

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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3answers
370 views

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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1answer
106 views

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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1answer
94 views

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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2answers
62 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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1answer
411 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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124 views

Aligning or integrating features from two feature classes using ArcGIS Desktop?

I am trying to align two line feature classes (street networks) that have been digitalized differently - see picture. One is more spatially accurate and has the attributes I need (A) and the other one ...
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389 views

Raster alignment

I have a problem with raster aligning. Given: Two rasters that need to be aligned. Rasters a little bit shifted, scaled and rotated. Two arrays of matched keypoints. Transformation is wrong, so ...
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73 views

Histogram charts rendering away from data

I am having issues with producing Histograms in my file. Initially I thought they were not showing up, but it turns out they are, just extremely far away from my actual data. For reference: Here are ...
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3answers
571 views

ArcGIS Attribute Table - Latitude, no Longitude

I received a shapefile from an online source, and in the attribute table it shows a column and values for latitude; but there is nothing for longitude. I have not used ArcGIS for some time, and I don'...
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1answer
137 views

Misalligned coordinate system of overlapping shapefile

I am using QGIS and have 2 shapefiles related to a particular city: The city blocks and the census tracks. When I bring them both into QGIS and overlay them, it's clear that the boundaries should ...
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1answer
115 views

Why the line in the shapefile does not align with the base map reference Runway? [closed]

I created a shapefile and set the coordinate system to WGS 1984 UTM zone 45N, and I added the base map Imagery with Labels. I created a line feature with Coordinates of two ends of the runway (27°...
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386 views

Align two georreferenced rasters which have different resolution in QGIS

I have two rasters in .TIFF format which have different resolution, different information and extent but georreferenced in the same coordinate system . I would like to know if it possible to align ...
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3answers
371 views

The raster or shapefile exported from Ecognition does not align with the original raster when I open it in QGIS

The raster or shapefile exported from Ecognition does not align with the original raster when I open it in QGIS. I'm using Ecognition to classify a raster, but when I export the shapefile and open it ...
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2answers
436 views

CityEngine: aligning a shape to terrain

I have three layers: 1-Parcels 2-Buildings 3-DEM I imported them all into CityEngine and I aligned parcels and Buildings to Terrain (DEM). I noticed that, in large parcels (see Figure 1), some ...
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1answer
474 views

Aligning raster data to vector data in QGIS?

I'm in the midst of aligning century-old maps (of Paris) to vector data of the modern same: Qgis' Georeferencer tool works fine, but doing the entire city that way is a gargantuan task. Paris hasn't ...
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1answer
208 views

Alignment problem in 2 vector shapefiles with the same projection

I have 2 vector shapefiles of Manila that are supposed to align, but they do not (screenshot attached). I have projected them to the same projection (World Mercator WGS 84, EPSG 3395). One shapefile ...
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1answer
255 views

Why does textAlign in Openlayers look opposite?

As far as I know with CSS knowledge, textAlign:left means the text should be stick left of the element. W3School textalign but in Openlayers, it looks working opposite. Openlayers vector label ...
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1answer
809 views

How to correct a Raster with Vector misalignment in QGIS?

I have had a lot of trouble aligning the various layers of information. I have 3 layers, one is a raster file, the other is vector file and the last one is a base OSM file. The project CRS is set to ...
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0answers
63 views

How can I merge roads layers that do not align perfectly?

I have multiple roads layers for a given area and would like to merge them into one layer since they each have some unique roads the other layer does not show. However, the roads that these layers ...
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1answer
551 views

QGIS Misaligned Shape with Google Maps/OSM

I am using QGIS for a project. I have started a new project from scratch within QGIS and have a set of Shape files that were given by the official government authorities. The problem is that when I ...
6
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1answer
914 views

Determining the direction of polygons?

Is there a way in QGIS to figure out the direction of a polygon, if there are no values given? What I need to know is if a polygon is directed to the south. I want to know the direction of a house ...
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1answer
3k views

Move raster image to overlay it perfectly on another same resolution raster

This question may seem strange at first, but what I need to do is to move a raster image over another raster image and align them perfectly. Both rasters have the very same size and resolution - one ...
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1answer
529 views

How can I improve alignment between google maps and overlays coming from a different coordinate system?

After some work, I managed to extract some PNGs out of a GIS we have at work. This GIS has some polygons in which addresses are surrounded by them. I managed to create an extractor in Python and to ...
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168 views

Make two lines align with each other

I have two street data sources, and as you can see, they are not perfectly aligning. However, I need data from both of them, so I wonder if there is a way to make them align perfectly with each other. ...
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1answer
104 views

Correcting Landsat images shifted by strangely high distance using ArcMap?

I have a set of ~20 Landsat images acquired with sensor version varying from LT5 up to L8, downloaded from EarthExplorer. Many of them do not align to the most current images, they are shifted by a ...
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0answers
69 views

Aligning environmental layers causing a change in nodata values [duplicate]

I'm trying to align and re-sample environmental layers in QGIS (2.18.3). The layers I am using were obtained from the world clim data base Bio3,Bio18,Bio12,Bio10 as well as a Sheep and Cattle layer ...
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1answer
432 views

Test pixel alignment in raster images

I want to test if two raster images for the same scene taken in different moments are aligned. I would like to do this automatically as I will be working with a lot of scene pairs. The process would ...
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1answer
95 views

Aligning geotiff file with raster

i am having some trouble and i could use some help. I downloaded a Geotiff file on WGS84 for the area that i am working for and i would like to clip it so it fits the outline of my map (red polygon). ...
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1answer
147 views

How to correct uneven raster cell sizes?

I am conducting a spatial analysis in ArcGIS. I have noticed my raster's are not 'aligning'. I have data from several sources which I converted to raster, all the same projection (NAD 1983 UTM Z10)....
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1answer
230 views

Can rasters in same CONSTRAINED table have different alignments in PostGIS?

Context I have a table filled with ASTER GDEM data for the state of Colorado tiled at 100x100 pixels. I want to query the table and return a single raster that covers all of the supplied bounding box ...
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74 views

Stacking/Aligning High-Res UAV Mosaics from Different Dates in QGIS?

I have two mosaics taken in different band sets respectively, on two different flights- of a crop field. The flights were taken a day apart, so the vegetation cover has not changed. The only issue is ...