Questions tagged [postgis-raster]
PostGIS Raster is a PostGIS data type for storing and analyzing raster data.
134
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Making slices through postgis raster tables
I have an existing python script that i am trying to "translate" into postgres sql.
The reason for this is that the server im using for this is not running python.
The objective is to slice ...
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2
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38
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How to test if a PostGIS table is a raster table or vector table?
Given a postgres table, is there a reliable way to test if it is a raster table?
I am planning on importing many rasters into PostGIS and then using pgraster and geometry interoperability. As a first ...
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51
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How to get the extent of a PostGIS raster table?
For vector data, it is possible to get the extent of an entire table using either ST_Extent or ST_EstimatedExtent.
How does one get the total extent of all rasters in a raster table?
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Export each raster in a PostGIS raster table as a separate image using gdal_translate
I read from this SO question that one can export an entire PostGIS raster table into one image, as follows:
gdal_translate PG:"host=localhost port=5432 dbname=landslide user=postgres password=...
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Why are overviews of an out-db postgis raster not out-db?
I'm working on out-db postgis raster and have generated overviews, but why are the overviews generated of an out-db rasters stored in-db?
I have tried creating overviews both manually using ...
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47
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Transform raster of unknown SRID using proj4 in PostGIS
In PostGIS is there any way to transform raster of unknown SRID using proj4 to EPSG:3857 without dumping polygons?
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30
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How to add new band to existing raster with distinct ephoc times as each pixel decimal precession value?
I am new to PostGIS and geospatial data processing. The input we have are bunch of geometry values in the form of Polygons and the ephoc time when this polygon data was captured. Ask is to create a ...
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2
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181
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Convert datum of elevation data in PostGIS
Is there any specific feature to convert raster values (representing elevation) between basis systems, or do I just have to make do with manually adding the mean offset having looked it up from ...
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47
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ST_PixelAsPolygons returning incorrect results
I stored sentinel 2 images as a tiled raster in my DB. The tile size is 244x244. So I want to extract data from those rasters. Currently I am trying to export the data by giving a point and number of ...
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ST_Transform in PostGIS not working on Linux, GDAL 3.5.1, but working on MacOS, GDAL 3.5.3
I have a raster in PostGIS that has a non-standard projection, namely
select srid,proj4text from spatial_ref_sys where srid=9822;
srid | proj4text ...
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1
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ST_SummaryStats gives unknown values (infinity and different values) when clipping raster with buffer
I am loading a raster to postgis (see postgis version and command below)
raster2pgsql /path_to_raster/temp-221025_12.tif -d icon_test -F -n name | PGPASSWORD=<PASS> psql -d <myDB> -h <...
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How can I get the raster cell values for a set of rasters in PostGIS, for each cell that intersects an arbitrary, user-provided polygon?
In PostGIS, I have a set of (large, U.S.-wide) rasters at high (30m) resolution. For my application, I need to take an arbitrary area of interest provided by the user, likely ranging in size from ...
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Coverage concept and PostGIS [closed]
I'm trying to understand the implementation of the interplay of raster and vector data in PostGIS. In this article Coverage Concepts and PostGIS on the PostGIS wiki page the concept of vector and ...
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ST_Rotate in geometry Vs ST_SetRotation in raster
I have one polygon geometry (Square to be precise). I tried to rotate that geometry via ST_Rotate(). Then I stored that same geometry in a raster and tried to rotate the raster with ST_SetRotation().
...
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1
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286
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Proj pipeline support in PostGIS
I would like to use proj pipeline in PostGIS ST_Transform function.
My sample SRS is as follows:
+proj=pipeline +step +inv +proj=unitconvert +xy_in=m +xy_out=us-ft +z_in=m +z_out=us-ft +step +inv +...
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Horizontal coordinate adjustment using EPSG 9621 operation method in PostGIS
We have some Cartesian coordinates which needs to be applied with similarity transformation. The transformation operation method describing how to do the same is explained in EPSG 9621 method.
How to ...
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123
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Addition of two rasters in PostGIS
I have two rasters (prast and frast) in PostGIS each with 1 band and with the similar extent and pixel characteristics (They were originally different bands of the same raster before I did some ...
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260
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PostGIS breaks after upgrade
I was running PostgreSQL 12 with PostGIS 3.1.1 extension. More than a week ago, I accidentally performed a PostGIS upgrade by running this query
SELECT PostGIS_Extensions_Upgrade(); which returned &...
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1
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486
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How to install raster2pgsql on centos7
I am running a postgis database on a server at work. The os is centos7, I can do more or less anything on the server, except for installing another os.
I want to upload some raster files to my ...
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210
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Raster not loading to PostgreSQL database
I am trying to load rasters to my PostgreSQL database with PostGIS enabled.
I am following the tutorial from here for using raster2pgsql: https://postgis.net/docs/using_raster_dataman.html#...
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1
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170
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How to store historical value of a raster pixel in postgis raster datatype?
I have a postgres table to store rasters having elevation value in each pixels. the raster size on average is around 100x100 with scale of 1. The elevation value is historic and I store timestamp in ...
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238
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raster2pgsql with GDAL Virtual File System /vsis3/
I cannot succeed to upload an out db cloud raster from AWS to a PostGIS db using raster2pgsql.
I'm working on Windows 10, using PowerShell. I've set the appropriate environment variables and I can ...
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165
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GiST indexing on constantly updating PostGIS Raster table best practice
I have a single PostGIS raster (3.x) table that holds multiple dates tiled up. I am constantly adding to this table via raster2pgsql. I want to keep the GiST index updated so I attach the -I flag but ...
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149
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Error in URL connection of PostGIS Raster community module plugin in GeoServer
I have a raster named MODIS_All_India_NDVI_2001_01_01.tif in the database named agro_dss in
PostGIS, in the public.modis_all_india_ndvi_2001_01_01 table.
The import was done using:
raster2pgsql -s ...
2
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0
answers
98
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Clip PostGIS raster to region that crosses 180 meridian
I am using postgis 2.5's raster to store global geographical data (weather forecast) in EPSG:4326 projection, using 0.25° resolution. I use tiling. I created queries to clip the global data to given ...
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327
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Should TOAST compression be disabled for PostGIS?
From this post about Binary data performance in PostgreSQL, I read that storing (large) binary data can be very slow in PostgreSQL (compared to storing the same data in file systems). This seems to ...
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182
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Converting a PostGIS grid back to raster
This is a follow-up question (or inverse) of the question
Converting a PostGIS raster back to vector.
I am trying to create a workflow that converts a PostGIS raster into a regular grid of polygons, ...
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122
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Schema error while uploading raster in PostgreSQL
Tried many ways
A.
import os
import subprocess
from subprocess import PIPE, run
db_name = 'agro_dss'
db_host = 'localhost'
db_port = '5432'
db_user = 'postgres'
db_password = 'imd123#'
os.environ['...
2
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2
answers
394
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How to efficiently fetch multiple ST_Value from PostGIS raster(s)
I have a raster table with index created by raster2pgsql
CREATE TABLE tbl (rid serial PRIMARY KEY, rast raster);
CREATE INDEX ON tbl USING gist (st_convexhull(rast));
I can see the best way to fetch ...
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422
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raster2pgsql command line issue (Windows 10) - ERROR: syntax error at or near "raster2pgsql"
I'm using the OsGeo4W64 shell that comes with QGIS (I'm using Windows 10) and have managed to log into my postgres database. However I'm looking to import a raster into a new table, and all roads seem ...
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43
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Is a PostGIS raster column more efficient than a geometry column in this scenario?
We have several different PostGIS tables that have a timestamp column and a geometry column. The geometry column contains polygons that are queried by a GeoServer instance to be served for display.
...
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1
answer
2k
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How to write docker-compose.yml after enabling postgis_raster for PostGIS Docker Image
I'm using the docker image of https://github.com/postgis/docker-postgis and it works fine with the commands below which is also defined in README file.
docker run --name some-postgis -e ...
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163
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Creating raster with cell value counts from another raster in buffer around each cell using PostGIS
Main objective
My main objective is to compute 1) the proportion of a given type of land cover around every raster cell in a radius of 500 m at the scale of an island (e.g.: there is 40 % of ...
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139
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Multiplying rasters by rasters within PostGIS
I have a situation where I have to multiply sets of rasters by each other.
Currently I have subfolders of rasters on my machine and am looping through them and multiplying them with rasterio.
Is there ...
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1
answer
783
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Slow retrieve PostGIS raster value through ST_Value
I have a PostGIS DB containing a set of daily raster data from 1981 up to 2021. The inserted raster tile size is 83x90.
Problem: I wanna query the data through ST_Value for a specified Lat Lon, ...
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50
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Can't upload raster file on PostGIS
I've been trying to upload my satellite imagery which is 1.5 GB to my PostgreSQL database, using the code below, the error for each command is stated below;
raster2pgsql -s 4326 -t auto -F -I -C -Y '....
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1
answer
125
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Get majority value of raster data inside polygon using PostGIS
We have imported a tiff with landcover data into PostGIS as a raster table.
We also have a polygon table with provinces.
I'm trying to get the majority of the landcover in each province.
But can't get ...
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0
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204
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GeoServer pgraster - Unable to convert coverage URL to a URI, attempting to use it as a path [closed]
I'm trying to configure an ImageMosaicJDBC using pgraster but I get the error in the screenshot.
As I'm really new on GeoServer, I guess I did something wrong.
From the log I can see this:
Aug 20 08:...
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221
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raster2pgsql - invalid pointer
I get the following error each time I run the raster2pgsql:
[postgres@li1959-236 ~]$ raster2pgsql -I -C -s 4326 -M -F /home/temp/wrf_d02_202005010000.tif grib_test | psql -d cep
Processing 1/1: /home/...
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46
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Showing number of added satellite images in PostGIS
I want to check how many bands of a satellite image have been added to a PostGIS raster table.
I know that you can get information by \d raster_columns (as told at PostGIS raster maximum number of ...
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1
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2k
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Problems enabling the postgis_raster extension, postgis_raster.control seems to be missing
I am a student and to learn more about PostGIS. I installed it to my Raspberry Pi, so that I can remotely access it via my laptop. The installation worked with the exception of the raster module.
When ...
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2
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1
answer
348
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Clip raster with postgis outputting result in clipping geometry extent
I want postgis st_clip to output clipped result in extent of initial clipping geometry.
Currently, it's crop option can be set to output either in initial raster extent or in extent of intersection ...
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2
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0
answers
166
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Optimization of multi-band raster clip by polygon
I have tiled (50x50), 365 band, rasters in my postgis database. Each band represents a day in a year.
I want to return the raster pixels which intersect with an input geometry, including all bands. I'...
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91
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Uploading m/analysing raster vector data in PostGIS
I am trying to build a web-GIS platform where user can upload their data (raster & vector) and do some kind of analysis, like calculate zonal statistics. I read lots of articles and blogs about ...
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219
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Loading raster in PostGIS
I am trying to load raster in PostGIS from my Windows cmd using:
C:\Program Files\PostgreSQL\9.6\bin>raster2pgsql.exe -s 4326 -I -C -M "D:\9.Taji\data\1_Admin Boundary-20200211T030329Z-001\check\...
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138
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Zonal stats for raster in PostGIS
I am trying to do zonal stat in PostGIS with the following command.
SELECT
(ST_SummaryStats(ST_Clip(agri_final_proj.rast, district.geom, TRUE))).*,
district.district_1 AS district_1,
...
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584
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Load all SRTM data into PostGIS
I am trying to load all the SRTM data into a PostGIS database. I tried the process described here: https://postgis.net/docs/using_raster_dataman.html
It created a giant SQL file. When I tried ...
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1
answer
437
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Connecting MapServer to a raster table in PostGIS
I am new in MapServer and I want to visualize some raster tables in MapServer.
My mapfile is:
MAP
CONFIG "MS_ERRORFILE" "error.log"
DEBUG 5
NAME "milad"
STATUS on
SIZE 600 600
EXTENT -8321547 ...
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605
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Insert QGIS processed raster image (e.g. GeoTIFF) to PostgreSQL/PostGIS database by pyqgis
I've already connected to my database by a script, and loaded a vector a layer to QGIS.
Is there a way to upload a raster layer back to the database?
tablename = "***"
geometrycol = "***"
from qgis....
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How install postgis_raster extention on PostgreSQL 11.5?
I want install postgis_raster extension on PostreSQL 11.5 + PostGIS 2.5.3 + MacOS 10.14.6
There is a install script on https://postgis.net/install/.
All installations of extensions work fine, except ...
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