Questions tagged [alignment]
The property of two different things being coincident or making them so.
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1answer
13 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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0answers
13 views
Aligning two polygon shapefile based on attribute field value in ArcGIS Desktop? [closed]
I have a two polygon shapefiles which features are similar (usually rectangles) but not identical. Each similar feature from both layers have the same ID value. Now I want to align features from one ...
2
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1answer
55 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
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0answers
47 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
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1answer
88 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
25 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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0answers
41 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
138 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
59 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
65 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
58 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
262 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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72 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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0answers
260 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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0answers
69 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
358 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
113 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
82 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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0answers
234 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
230 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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vote
2answers
282 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 ...
2
votes
0answers
320 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
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1answer
170 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
189 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
555 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
57 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
392 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
736 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
2k 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
362 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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0answers
102 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
99 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
49 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
351 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
85 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
110 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
177 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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0answers
69 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 ...
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1answer
723 views
Blending overlapping raster mapsheets with QGIS and GIMP
How can overlapping raster map sheets be overlaid in QGIS, and manually blended together in GIMP?
I have an overlapping set of hand-drawn raster maps that contain varying levels of detail and would ...
4
votes
1answer
421 views
How to align edges of overlapping polygons in the middle line?
The problem
Here are two polygons that overlap.
My ultimate goal is to reshape the grassland (green poly) and the reservoir (blue poly) so they share the edge somewhere in the middle of their ...
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0answers
102 views
How to Align Vector Layer on QGIS cloud Imageries for Printing [duplicate]
I noticed a weird problem every time I save maps with either Bing or Google Imageries from QGIS Cloud. The vector features all align perfectly well on the map canvas and even on print composer. But ...
2
votes
1answer
458 views
PostGis's ST_MapAlgebra rasters do not have the same alignment
I'm having a problem with ST_MapAlgebra.
An error stating The set of rasters provided (custom extent included, if appropriate) do not have the same alignment is shown.
I've been trying to know where ...
5
votes
3answers
544 views
Layers in QGIS that Should Align Don't (but do in FME)
I have seen numerous questions of this nature and all suggest incorrect assignment of CRS along the way. I feel I have tried every combination of relevant CRS values but still cannot load two ...
1
vote
1answer
919 views
Aligning Multiple Objects in AutoCAD?
I want to georefrence streets in Autocad.
I used _Align command for a single object, but it is not working with multiple objects.
How can we align multiple objects together in autocad?
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votes
2answers
168 views
Closest facility analysis not offering shortest route in ArcGIS Network Analyst?
I want to get the shortest paths from some points to the nearest highway junctions. I extracted the highway junctions by doing the Intersect function from the network junctions and selected highways. ...
3
votes
1answer
206 views
GRASS - Aligning grids of different rasters
I am working on a Landsat analysis script using GRASS GIS.
For that, I need to focus on a certain area based on raster "landscape" using r. mask raster="landscape" cat=$foo and then run r.reclass on ...
4
votes
1answer
142 views
QGIS shapefile misaligns when adding to arcGIS Online
I have access to an ArcGIS Online account. I wanted to create a map with some polygons. So I've used QGIS to make the shapes, saved the layers, zipped them, and uploaded them to ArcGIS Online.
Two ...
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0answers
453 views
Aligning polygons in ArcGIS for Desktop? [closed]
I am using ArcGIS 10.3 for Desktop.
I am working on a map that I have divided into 5 zones. I have drawn 5 polygons to represent each zone. I need to align the polygons where the edges meet. I am ...
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0answers
85 views
Alignment in ST_Intersection with PostGIS raster
Trying to intersect two rasters, but they don't have the same scale. I have to do everything in one query.
The query below gets the following error: The two rasters provided do not have the same ...
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0answers
297 views
Align Geotiff images in Qgis
I generated 3 drone maps of one area. The individual images were stitched using dronedeploy. Each map has some overlap with others. I imported all 3 geotiffs as rasters in Qgis and overlay them.
...
