[Qgis-user] Points grid.

[Ourizo Cacho]

Hi Richard,

thanks for your reply.

What you´ve just described gets pretty close to what I would need (or I 
should say, its exactly what I need). In my case, I need that grid for 
an experimental design related with forestry management. I have to jot 
down information in everyone of these points. So an attribute table 
would be much appreciated (within the same plugin or not).
It´s important the fact of being able to rotate the grid because many 
times it would have to be adapted to the experimental design. And not so 
important (I think) the rotation angle if you have some flexibility to 
rotate the whole grid (we´re are not working with a Total Station 
instrument and I dont think that precision could be required).
The clip-option is very interesting as well, I was figuring out how to 
deal with that, once I had the grid layer. Another interesting feature I 
would consider would be the chance of distinguish by cateogories the 
points you have to work with (as if you would classify them into 
categories; visually you could show to other people the characteristic 
that makes them different; I think the code you talked about could be a 
nice thing to do that).
Unfortunately I don´t have so much time and I will deal with this by 
rudimentary methods. I think I will use Autocad to get the grid layer, 
export to a dxf. Then in QGIS I would add new fields or columns. With 
the clip geoprocessing tool I will make the clip. If I consider in the 
coming future (when I needed to get this job done) some other 
interesting features for your plugin I could also name them so that you 
can consider the best way to get a better plugin.
Since then....I hope this can help you.

Regards.


El 22/10/2014 a las 10:36, Richard Duivenvoorde escribió:
> On 22-10-14 09:47, Ourizo Cacho wrote:
>> Hello everyone,
>>
>> I have a polygon shapefile with a single entity.
>>
>> Need to create a point grid. Different x and y distance. Besides, I need
>> to add a orientation for the grid (in degrees).
>>
>> I´ve searching among the different algorithms but found nothing
>> interesting so far.
>>
>> Can anyone help me please??.
> Hi Ourizo,
>
> not at this moment, but I'm planning/busy with a
> 'borehole/sample'-plugin scenario. I'm also wondering about the options.
>
> It's for a company taking samples from certain plots or lines, in a grid
> or along lines.
>
> My use-case plan was:
> - select a 'plot' layer (either line or polygon), can be a temporary one
> - select one line or plot in it
> - give plugin some dx/dy/dxx values (to be able to do a shifted grid)
> - in a fresh memory layer, the plugin will generate a grid box, big
> enough to be able to rotate it and still covering the plot
> - plugin will select all features in this memory layer and make it editable
> - now using standard qgis tools you can move or rotate the grid (though
> not yet in degrees <= would be a nice feature)
> - after ready rotating/moving the plugin clips it to only have the
> features which are inside the plot
> - copy-paste the points to their final destination layer (standard QGIS way)
>
> Because normally you want those points have a certain code, a second
> part of the plugin (or a separate one) is a plugin which you can give a
> -prefix
> -counter (start)
> -postfix
> and a column to write the code in
> Now hovering over or clicking on the points (and based on
> prefix/counter/postfix) the points are given a code.
>
> Other options? Any comment on this plan? Would this be a workable way?
> Or do you think it would be easier to have this as an algorithm?
>
> Regards,
>
> Richard Duivenvoorde
>
>
>
>
>


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