Hi Petr, I have merged the data using cbind. The dataset is like this: DF lat1_lon1 lat1_lon2 lat1_lon3 ... lat2_lon1 1.20 1.30 2.11 ... 1.28 1.50 1.81 3.12 ... 2.34 2.41 2.22 1.56 ... 2.50 3.11 4.21 2.12 ... 3.21
The other file is a shapfile, which I can open using readOGR. Then it shows a polygon according to geographical latitude and longitude in degrees. How to overlay the values in DF onto the polygon? note that DF has the coordinates for a rectangular box that includes the shapefile, but is larger. I don't know how to do this. Thanks for your help. On Wed, Sep 12, 2018 at 3:22 PM, PIKAL Petr <petr.pi...@precheza.cz> wrote: > Hi > > 1. Read files/lines into R ?read.table, ?read.lines > 2. Merge files according to your specification ?merge, ?rbind > 3. Plot values by suitable command(s) ?plot, ?ggplot > 4. If you want more specific answer, please post more specific question, > preferably with concise and clear example. > 5. Avoid posting in HTML > > Cheers > Petr > > > -----Original Message----- > > From: R-help <r-help-boun...@r-project.org> On Behalf Of lily li > > Sent: Wednesday, September 12, 2018 8:55 AM > > To: R mailing list <r-help@r-project.org> > > Subject: [R] how to plot gridded data > > > > Hi R users, > > > > I have a question about plotting gridded data. I have the files > separately, but do > > not know how to combine them. For example, each txt file has daily > > precipitation data at a specific grid cell, named pr_lat_lon.txt. How to > plot all > > txt files for one surface (which is rectangular in this case), or how to > combine > > the txt files together? Thanks. > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > R-help@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. > Osobní údaje: Informace o zpracování a ochraně osobních údajů obchodních > partnerů PRECHEZA a.s. jsou zveřejněny na: https://www.precheza.cz/ > zasady-ochrany-osobnich-udaju/ | Information about processing and > protection of business partner’s personal data are available on website: > https://www.precheza.cz/en/personal-data-protection-principles/ > Důvěrnost: Tento e-mail a jakékoliv k němu připojené dokumenty jsou > důvěrné a podléhají tomuto právně závaznému prohláąení o vyloučení > odpovědnosti: https://www.precheza.cz/01-dovetek/ | This email and any > documents attached to it may be confidential and are subject to the legally > binding disclaimer: https://www.precheza.cz/en/01-disclaimer/ > > [[alternative HTML version deleted]] ______________________________________________ R-help@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.