Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [alignment]

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

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 ...
3
votes
2answers
2k views

How to align/georeference distorted vector layers in QGIS?

I've got a shapefile which has been digitized from a strongly distorted historical map, and would like to align it as nicely as possible to another precise shapefile layer. The transformation must ...
1
vote
1answer
464 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 ...
1
vote
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 ...
6
votes
1answer
765 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 ...
7
votes
2answers
3k views

Move a layer in QGIS to a precise position based on centroid

I'm not quite sure how to phrase this so apologies if it is a duplicate. I have a project that uses a series of lines created from the boundaries of polygons overlaid onto a map in QGIS. I understand ...
4
votes
1answer
798 views

How to align QGIS legend items to the right?

Is there a way to align QGIS map composer legend items to the right, for right-to-left languages? There is only a title alignment option. Furthermore, I found this ticket from 4 years ago regarding ...
1
vote
2answers
408 views

Road-construction (alignment) tools

Are there any tools available in any GIS environment for route alignment? To be specific, the tool should take a DEM and road-construction parameters -- distance and gradient, roadfill, drainage ...
3
votes
1answer
323 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....
1
vote
1answer
180 views

Projected MODIS data not aligning with ESRI basemap in ArcGIS for Desktop?

I can not get 1km MODIS data aligned with ESRI basemaps in ArcGIS 10.2.2 for Desktop. See the photo below. I reprojected MODIS17A3 data using the MRT (MODIS reprojection tool). I selected WGS84 ...
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 ...
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
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 ...