Re: [R-sig-Geo] Spatial nested grid in R

`It depends on what you mean by "overimpose".`
```
Maybe this way?

# some spatial polygon
library(maptools)
R <- as(affine(letterR, mat=diag(c(20,20))), "SpatialPolygons")
plot(R, border="blue")

# "overimpose" grids A to C on R:

Cheers,
Marcelino

El 10/02/2023 a las 13:29, Manuel Spínola escribió:
```
```Thank you very much Marcelino.

And how can overimpose those grids to a spatial polygon?

Manuel

```
On Fri, 10 Feb 2023 at 03:09 Marcelino de la Cruz Rot <marcelino.delac...@urjc.es> wrote:
```
Dear Manuel,
This is R. There is no "it is possible". Only "how" ;-).

For example, with spatstat.geom,

A <- tess(xgrid=seq(0,80, by=8),ygrid=seq(0,80, by=8))
B <- tess(xgrid=seq(0,80, by=4),ygrid=seq(0,80, by=4))
C <- tess(xgrid=seq(0,80, by=2),ygrid=seq(0,80, by=2))
D <- tess(xgrid=seq(0,80, by=1),ygrid=seq(0,80, by=1))

Cheers,
Marcelino

El 10/02/2023 a las 0:21, Manuel Spínola escribió:
> Dear list members,
>
> Is it possible to generate a spatial nested grid in R?
>
> For example, a grid of several 8km x 8km tiles, and within that
grid, I
> want 4 tiles of 4km x 4km, and in each of those I want 4 tiles
of 2km x
> 2km, and in each of those I want 4 tiles of 1km x 1km.
>
> Manuel
>

```
-- Marcelino de la Cruz Rot
```    Coordinador funcional de Biología
Depto. de Biología y Geología
Física y Química Inorgánica
Móstoles España

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*Manuel Spínola, Ph.D.*
Instituto Internacional en Conservación y Manejo de Vida Silvestre
Heredia
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mspinol...@gmail.com
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```
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```Blog sobre Ciencia de Datos: https://mspinola-ciencia-de-datos.netlify.app
```
```

--
Marcelino de la Cruz Rot