Hi David,
Thanks. Found this in my trash. Sorry for not responding sooner. I
will look at the snippet It will be handy. So far, I have been using
the plugin Builder and this
https://www.qgistutorials.com/en/docs/3/building_a_python_plugin.html
It's not up to date but it gives me a good
Hi,
I did suggest it indeed. Ideally, it would go in the QGIS core every time they
ask for a z factor. (Like under shading in the layer style). I will probably
play around with it just to learn who to make a plugin but if you want to put
it in your plugin, go ahead.
Nicolas Cadieux
Hi,
For now, probably just a box where you entre y and x and an select an
ellipsoid. Ideally, you could just pick a raster and the latitude at the
centre of the file and the project ellipsoid would be selected. I have the
python formula for Proj as I use it in my python script. I just
Hi,
Thanks for the heads up. I will check.
Nicolas Cadieux
https://gitlab.com/njacadieux
> Le 27 nov. 2020 à 06:01, Bernd Vogelgesang a écrit
> :
>
>
>> On 27.11.20 10:52, Raymond Nijssen wrote:
>> ...
>> Last week I had a similar idea for a plugin that could tell you which
>> UTM zone to
I have a Lat Lon Tools plugin, Field Calculator function that generates the
UTM zone.
Nicolas, you just reminded me that you had suggested this to me earlier as
a plugin. Something like that would be easy to add, but I'm not sure it
fits within Lat Lon Tools which captures different coordinates,
Isn't that already covered by the "Projestions" plugin?
Yes, something like that! I didn't know it. It doesn't give me any utm
zone though..
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On 27.11.20 10:52, Raymond Nijssen wrote:
...
Last week I had a similar idea for a plugin that could tell you which
UTM zone to pick for your current canvas. I decided it would not be
worth the effort. But maybe these could go together (and be finished
at the end of this "KwakFriday"?
Isn't
Hi Nicolas,
It is just a simple formula for calculating the "z-factor" for a given
latitude. What would that look like in a plugin? Where would it go? What
would it do or show?
Last week I had a similar idea for a plugin that could tell you which
UTM zone to pick for your current canvas. I
Nicolas,
that would be helpful indeed! Yet I do it manually each time...
Maria
> Am 27.11.2020 um 14:13 schrieb Nicolas Cadieux :
>
> Hi,
>
> It's just the Z factor needed when you make a hillshade when the x an y are
> in degrees and the z is in feet or meters (like SRTM). You can see it
Hi,
It's just the Z factor needed when you make a hillshade when the x an y
are in degrees and the z is in feet or meters (like SRTM). You can see
it if you choose Hillshade under symbology / render type (for a raster
layer). It's basically the length of a degree in meters for latitude.
On 11/27/20 5:28 AM, Nicolas Cadieux wrote:
> I want to learn to make a QGIS plugin and I was wondering if anybody new if
> there is a QGIS plugin or tool that calculates the z factor for a particular
> latitude? I thought this would be an easy project to start with but I don't
> want to
Hi,
I want to learn to make a QGIS plugin and I was wondering if anybody new
if there is a QGIS plugin or tool that calculates the z factor for a
particular latitude? I thought this would be an easy project to start
with but I don't want to duplicate someone else's work.
Thanks for your
I'd agree, the aspect of a slope does not vary with it's gradient, and
the scale factor is only used to ensure that the gradient calculations
are made using consistent units in XY & Z.
Cheers,
Andy
On 11/10/2018 19:43, Nicolas Cadieux wrote:
Hi,
I use a z factor in slope and hill shade
Hi,
I use a z factor in slope and hill shade calculation when my DEMs are in
Long/Lat and the altitudes in metres (like SRTM, ASTER GDEM...). In
GdalDem , there is not a z factor or a scale option for Aspect (0-360D
azimuth) but in the Qgis terrain analysis, there is. (It does not appear
to
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