Questions tagged [alignment]

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

Filter by
Sorted by
Tagged with
3
votes
1answer
371 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 ...
1
vote
1answer
31 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
44 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 ...
0
votes
1answer
28 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 ...
1
vote
1answer
30 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 ...
3
votes
1answer
324 views

List of vector to one raster in PostGIS

I need to rasterize a part of OSM map by coordinates. I found rather good algorithm, but can’t finish it. I have problems in STEP 3. I described all algorithm here – may be someone have the same task....
2
votes
1answer
69 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
99 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
123 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 # ...
6
votes
1answer
418 views

Extract By Mask moving pixels in ArcGIS Desktop?

I am creating some statistics based on certain values. The issue I am having is that the extracted values are not the same as the values in the original raster. This creates incorrect output, and I ...
1
vote
3answers
266 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 ...
4
votes
1answer
130 views

What is the standard terminology for raster alignment?

I would like to identify two types of raster alignment (assuming SRS is the same), but I am unsure of the correct terminology for these (or whether there is even a 'standard')? First, there is 'pixel ...
0
votes
1answer
69 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 ...
1
vote
0answers
42 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
183 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 ...
3
votes
3answers
2k views

Clip_management to raster extent outputs larger raster than raster extent

Using Python and ArcMap 10.0 SP5, I'm trying to reproject and clip a large input raster to exactly the same grid as a smaller target raster (same extent, pixel sizes and projection). The problem is ...
0
votes
1answer
72 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 ...
1
vote
1answer
371 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 ...
0
votes
2answers
60 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
327 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?
1
vote
0answers
77 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 ...
1
vote
0answers
298 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
72 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 ...
3
votes
1answer
235 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 ...
1
vote
0answers
48 views

Exported PDF resulting in misaligned Bing Aerial and vector layer using QGIS? [duplicate]

I'm working with QGIS 2.8.1. I have a project with CRS: 3947 (Central-Western France) and several layers in the same CRS. I have not activated the 'On the fly' CRS transformation. I add the Bing ...
4
votes
2answers
481 views

Align pixels from two rasters with different cell sizes

I have two rasters in a PostGIS database that I want to be able to compare. The first raster is at 5m pixel resolution and the second raster is at 30m pixel resolution and is on a different grid. How ...
1
vote
3answers
429 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
124 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
84 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
290 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 ...
0
votes
3answers
112 views

Transform/Align Census 2000 Blocks to Census 2010 Blocks

I would like to align census tabulation blocks from the 2000 and 2010 censuses. I have the relationship file, so I know which blocks are suppose to the same and which were split or consolidated. ...
1
vote
2answers
335 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 ...
1
vote
0answers
137 views

Aligning hundreds of rasters quickly? [closed]

I'm hoping to accurately align hundreds of aerial images that are slightly off-kilter. The images cover the same area on different dates (several acres). They contain identifiable features around ...
1
vote
1answer
2k views

Aligning existing polygon borders using QGIS?

I'm looking for a method to align the borders of two overlapping and already existing polygon layers. I'm aware of the node tool and its tolerance snapping option, but the area I'm working with is too ...
1
vote
1answer
466 views

Interpolated raster not aligned with the vector data

I have loaded some tab delimited text data into QGis to interpolate the points. When I get to the interpolation (IDW) part everything breaks down. The output raster file does not align with the ...
13
votes
7answers
13k views

Aligning two non-coincident equi-resolution raster grids in ArcGIS Desktop?

I have two rasters: a digital elevation model (DEM) and a Landsat band. The grid resolution of both is 30 m, but the grids are not coincident (see image: the dark raster on top is the DEM; the light ...
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 ...
1
vote
1answer
779 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 ...
3
votes
1answer
183 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
209 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 ...
4
votes
1answer
461 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 ...
3
votes
2answers
4k views

OL3 the text is incorrectly aligned

Using OpenLayers3 I have observed an incorrect alignment of the text when styling the features of the Cluster source. Also the baseline of the text appears to be ignored. The below code sample (or ...
1
vote
1answer
624 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
60 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
438 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
784 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
102 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
1answer
1k views

Using Google Maps, the mouse cursor and the dot on the map not inline

I'm trying to implement the example http://openlayers.org/dev/examples/drag-feature.html . When I'm implementing this with a Google map, I have a strange bug: the mouse pointer and the dot on the map ...
2
votes
1answer
416 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
117 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. ...