Hi,
To my knowledge, what you are seeing is just the result of zooming in too much
using the nearest neighbour algorithm. I don’t think it’s a bug. If you change
the sun angle and the sun position, you may have better results. Then, play
with the Contrast and layer blending. I have seen this Pixel border effect on
QGIS since version 1.8. Someone correct me if I am wrong.
Nicolas Cadieux
Ça va bien aller!
> Le 29 juin 2020 à 23:37, cg...@graytechsoftware.com a écrit :
>
> Nicolas,
>
> My x, y, and z are all in meters for my raster. The CRS for the project is
> also x, y, and z in meters.
>
> I tried your suggestion for changing the resampling. It definitely eliminated
> the problem, however it results in too much smoothing for my purpose. I do
> want to be able to see the actual pixel, but I want that pixel to be a single
> color representative of its value rather than a color with a boarder as shown
> in my screenshots.
>
> It seems this only occurs when the raster resolution matches the base unit of
> the CRS. I think this is a bug, but I have not exhausted the configuration
> options yet.
>
> Thank you, Chris
>
> -Original Message-
> From: Qgis-user On Behalf Of Priv.-Doz.
> Dr. Maria Shinoto
> Sent: Monday, June 29, 2020 7:15 PM
> To: Nicolas Cadieux
> Cc: Alister Hood ; qgis-user@lists.osgeo.org
> Subject: Re: [Qgis-user] Hillshade Rough Blocks for 1m Rasters?
>
> A month ago or so I had exactly the same problem and could solve it with
> these tips from Nicolas. Good luck!
>
> Maria
>
>
>> Am 30.06.2020 um 07:32 schrieb Nicolas Cadieux :
>>
>> Hi,
>>
>> If your x and y distance unit is different from the z distance (like long
>> lat degrees for x and y and meters for z), you will need a z Factor, or you
>> need to save the raster in a crs that has x,y,z in the same unit (like
>> meter).
>>
>> https://www.esri.com/arcgis-blog/products/product/imagery/setting-the-
>> z-factor-parameter-correctly/
>>
>> You can also improve the look in the layer/Symbology/Resampling and select
>> cubic for "zoomed in" and Average for "zoomed out".
>>
>> Nicolas
>>
>>> On 2020-06-29 6:23 p.m., Alister Hood wrote:
>>> It does shade the pixel, but it also shades the edges unless the layer is
>>> being reprojected.
>>> There is a ticket for this, but you can workaround it by enabling
>>> resampling for that layer.
>>>
>>> Date: Mon, 29 Jun 2020 16:57:11 -0400
>>> From:
>>> To:
>>> Subject: [Qgis-user] Hillshade Rough Blocks for 1m Rasters?
>>> Message-ID: <024601d64e57$dcbddd00$96399700$@graytechsoftware.com>
>>> Content-Type: text/plain; charset="utf-8"
>>>
>>> If I use a 1m resolution raster on a CRS in meters and render it as a
>>> hillshade, it appears to shade the edges of each pixel instead of the
>>> pixel
>>> itself:
>>>
>>> If I use, a raster made in a CRS with ft for units displayed on a CRS
>>> in meters, it renders each pixel smoothly:
>>>
>>> How do I get the hillshade to render smoothly always, especially in a
>>> CRS in meters when using metric units for the raster?
>>>
>>> Thank you, Chris
>>>
>>>
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