[R-sig-Geo] Cumulate space time data over days

[Jue Lin-Ye]

On 20 July 2015 at 11:32, pierluigi de rosa <pierluigi.derosa at gmail.com>
wrote:

> I simply have a STFDF like I attached at the end of the mail.
>
> > summary(pioggieST1)
> Object of class STFDF
>  with Dimensions (s, t, attr): (30, 8401, 1)
> [[Spatial:]]
> Object of class SpatialPointsDataFrame
> Coordinates:
>               min     max
> coords.x1 2272679 2320496
> coords.x2 4698989 4821088
> Is projected: TRUE
> proj4string :
> [+proj=tmerc +lat_0=0 +lon_0=15 +k=0.9996 +x_0=2520000 +y_0=0 +ellps=intl
> +units=m +no_defs]
> Number of points: 30
> Data attributes:
>                 nome
>  Allerona         : 1
>  Amelia           : 1
>  Attigliano       : 1
>  Avigliano_Umbro  : 1
>  Bastardo         : 1
>  Calvi_dell_Umbria: 1
>  (Other)          :24
> [[Temporal:]]
>      Index              timeIndex
>  Min.   :1991-01-01   Min.   :   1
>  1st Qu.:1996-10-01   1st Qu.:2101
>  Median :2002-07-02   Median :4201
>  Mean   :2002-07-02   Mean   :4201
>  3rd Qu.:2008-04-01   3rd Qu.:6301
>  Max.   :2013-12-31   Max.   :8401
> [[Data attributes:]]
>      values
>  Min.   :  0.000
>  1st Qu.:  0.000
>  Median :  0.000
>  Mean   :  1.489
>  3rd Qu.:  0.000
>  Max.   :273.000
>
> In the space slot I have 30 points.
> For each point I have a xts element:
> For the first point the xts element is:
> > summary(pioggieST1[1,])
>      Index                values          timeIndex
>  Min.   :1991-01-01   Min.   :  0.000   Min.   :   1
>  1st Qu.:1996-10-01   1st Qu.:  0.000   1st Qu.:2101
>  Median :2002-07-02   Median :  0.000   Median :4201
>  Mean   :2002-07-02   Mean   :  2.105   Mean   :4201
>  3rd Qu.:2008-04-01   3rd Qu.:  0.200   3rd Qu.:6301
>  Max.   :2013-12-31   Max.   :176.800   Max.   :8401
>
> or
>
> > head(pioggieST1[1,])
>            values timeIndex
> 1991-01-01      0         1
> 1991-01-02      0         2
> 1991-01-03      0         3
> 1991-01-04      0         4
> 1991-01-05      0         5
> 1991-01-06      0         6
>
> For each day I have to calculate the sum of "values" relative to the day +
> the "values" of the day -1 and the day -2
>
> How can I do that simply?
>
> Thanks
> Pierluigi
>
>
​
Dear Dr. De Rosa,

Please excuse me, what I meant was whether you may attach a fraction of the
array pioggieST1, even a modified one, so we could work on it.

Best regards,

Jue
​


> 2015-07-20 10:43 GMT+02:00 Jue Lin-Ye <jl.iccp at gmail.com>:
>
>> Dear Dr. De Rosa,
>>
>> May you attach some data to your e-mail so we could reproduce your case?
>>
>> Best regards,
>>
>> --
>> Jue
>>
>
>
>
> --
> Ing. Pierluigi De Rosa (PhD)
> cel: 3497558268 / fax: 075 7823038
> skype: pierluigi.derosa
>

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