You'd get better results if you send your information to the list, and as plain-text email with data either included or using one of the built-in datasets in R. I don't necessarily know the answer even though I know the right way to ask the question.
Sarah On Thu, Jan 7, 2016 at 3:35 PM, Mistry, Krishan <km...@student.le.ac.uk> wrote: > Dear Sarah, > > This isn't homework, but in fact optional extra work for a R practical > session. I am new to R and haven't done any programming before. Would you be > able to assist me, if i am able to send you the question on a word document > along the data that is used. > > Kind Regards > Krishan > > ________________________________________ > From: Sarah Goslee <sarah.gos...@gmail.com> > Sent: 07 January 2016 20:31 > To: Mistry, Krishan > Cc: r-sig-geo@r-project.org > Subject: Re: [R-sig-Geo] R Help > > As you will see below, posting in HTML format made your question unreadable. > > However, this looks rather like homework, and if so then you should > look for help from the resources associated with your course. > > If it isn't homework, you will get much more assistance if you provide > a reproducible example including data and the code you've tried > already. > > Sarah > > On Thu, Jan 7, 2016 at 3:24 PM, Mistry, Krishan <km...@student.le.ac.uk> > wrote: >> Dear Sir/Madame, >> >> I am currently a Masters student at the University of Leicester in the UK >> studying MSc Geographical Information Science and am having a bit of >> difficulty with the programme R. I am a new user of the programme and don't >> have any previous experience in programming. Having looked at various web >> sites, I wondered if you are able to help me with some trouble i am having >> in trying to write some code for a mathematical equation. >> I have attached the question to this email and it can be seen below. The >> dataset is a list of polygons with each polygon containing another list >> within it, of x and y coordinates. >> >> I would really appreciate it, if you could help me with this question. >> >> Question >> Create functions to compute the area, centroid and perimeter of a polygon >> list (as in the format of georgia.polys). The formula for the area of a >> polygon is >> >> A=0.5*?(x? y???) (x??? y?) for i until n-1 >> >> where A is the polygon area, xi is the ith x-coordinate of the polygon >> boundary (x[i] in R), yi is the ith ycoordinate of the polygon boundary >> (y[i] in R) - and n is the number of points used to specify the polygon >> boundary. The polygon is assumed to be in closed form so that the x1 and y1 >> take the same value as xn and yn. >> >> Hope to hear from you soon. >> >> Yours sincerely >> >> Krishan Mistry >> _______________________________________________ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo
