Hello Even,
My map contains no overviews but a seamless collection of PNG tiles with
zoom levels ranging from 13 to 17 (which I suppose is similar to
overviews). Each tile is 256 x 256 pixels with the pixel being RGB888, a
pretty much standard arrangement.
When reading I call each band's
Deyan,
you generally don't need to use that option. The driver should
automatically select the right overview level when you use the dataset
or band RasterIO() methods, according to the window of interest and the
size of the buffer you specify.
Even
Le 29/12/2021 à 19:47, Deyan Vasilev a
Hello,
I am trying to handle map zooming in a GDAL-based MBTiles windows app. The
only way I have found to control the raster's zoom level is through
GDALOpenEx's open options.
Changing the zoom-level app-side would require closing the MBTiles db and
reopening it, passing the new zoom level as an
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-Original Message-
From: gdal-dev [mailto:gdal-dev-boun...@lists.osgeo.org] On Behalf Of Luca
Bertoncello
Sent: Wednesday, December 29, 2021 5:49 AM
To: gdal-dev@lists.osgeo.org
Subject: [EXTERNAL] Re: [gdal-dev] Get max elevation on "squares"
EXT email: be mindful of
Am 29.12.2021 um 11:42 schrieb Andrew C Aitchison:
> Is this the max or the average height of the square ?
Mmmm... Now I'm unsure...
> Do you need to warn of pylons, skyscrapers, bridges or radio masts ?
> These are unlikely to be included in such map data.
None of them. Gound elevation
> I
On Tue, 28 Dec 2021, Luca Bertoncello wrote:
Am 28.12.2021 um 16:45 schrieb Alan Snow:
This resource is useful to help you get started exploring raster data
with Python:
Maybe there is other possibility than write a Python code? I really
don't know Python and if I first need to learn it to
Am 29.12.2021 um 10:30 schrieb Volker Wichmann:
Hi Volker
> I haven't followed the discussion in detail, but you could use
>
> https://gdal.org/programs/gdallocationinfo.html
>
> to read out the values from your resampled raster.
I did that. And got a little Python script to export the data
Hi Luca,
I haven't followed the discussion in detail, but you could use
https://gdal.org/programs/gdallocationinfo.html
to read out the values from your resampled raster.
The elevation differences between high and coarse resolution DEMs
strongly depend on the relief in the area of
