# Extract.msr

From spatstat v1.44-0
by Adrian Baddeley

##### Extract Subset of Signed or Vector Measure

Extract a subset of a signed measure or vector-valued measure.

##### Usage

```
## S3 method for class 'msr':
[(x, i, j, \dots)
```

##### Arguments

- x
- A signed or vector measure.
An object of class
`"msr"`

(see`msr`

). - i
- Object defining the subregion or subset to be extracted.
Either a spatial window (an object of class
`"owin"`

), or a pixel image with logical values, or any type of index that applies to a matrix. - j
- Subset index selecting the vector coordinates to be extracted,
if
`x`

is a vector-valued measure. - ...
- Ignored.

##### Details

This operator extracts a subset of
the data which determines the signed measure
or vector-valued measure `x`

. The result is another measure.

##### Value

- An object of class
`"msr"`

.

##### See Also

##### Examples

```
example(msr)
rp[square(0.5)]
rs[ , 2:3]
```

*Documentation reproduced from package spatstat, version 1.44-0, License: GPL (>= 2)*

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