Questions tagged [alignment]
The property of two different things being coincident or making them so.
105
questions
0
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1answer
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 ...
7
votes
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 ...
0
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0answers
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 ...
0
votes
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 ...
0
votes
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 ...
2
votes
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 ...
1
vote
0answers
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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0answers
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 ...
2
votes
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 = ...
0
votes
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,
...
1
vote
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 ...
1
vote
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 ...
2
votes
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 ...
1
vote
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 ...
2
votes
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.
...
2
votes
0answers
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 ...
3
votes
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
# ...
0
votes
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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vote
0answers
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
...
1
vote
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 ...
0
votes
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 ...
0
votes
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 ...
0
votes
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 ...
3
votes
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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0answers
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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vote
0answers
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 ...
1
vote
0answers
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 ...
1
vote
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'...
1
vote
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 ...
0
votes
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°...
0
votes
0answers
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 ...
1
vote
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 ...
1
vote
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 ...
4
votes
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 ...
3
votes
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 ...
1
vote
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 ...
1
vote
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 ...
3
votes
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 ...
2
votes
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
votes
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 ...
1
vote
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 ...
2
votes
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 ...
0
votes
0answers
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. ...
1
vote
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 ...
2
votes
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 ...
1
vote
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 ...
1
vote
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).
...
1
vote
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)....
1
vote
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 ...
1
vote
0answers
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 ...
