How to create gridded data

You might take a look at the reshape package, which switches from 'long' to 'wide' formats and vice versa in a fairly flexible way.

S Ellison
-----Original Message-----
From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of lily li
Sent: 13 November 2018 07:22
To: R mailing list
Subject: [R] How to create gridded data

Hi R users,

I have a question about manipulating data. For example, I have DF1 as the
following, how to transform it to a gridded dataset DF2? In DF2, each value
Precip is an attribute of the corresponding grid cell. So DF2 is like a
spatial surface, and can be imported to ArcGIS. Thanks for your help.

DF1
latitude   longitude   Precip
45.5           110.5         3.2
45.5           111            5.0
45.5           111.5         1.8
45.5           112            2.0
46              110.5         6.1
46              111            4.5
46              111.5         7.8
46              112            5.5
...

DF2
6.1   4.5   7.8   5.5
3.2   5.0   1.8   2.0
...

	[[alternative HTML version deleted]]

______________________________________________
R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-
guide.html
and provide commented, minimal, self-contained, reproducible code.
*******************************************************************
This email and any attachments are confidential. Any use...{{dropped:8}}

How to create gridded data

Thread (8 messages)