search for: cylindres

I have nc files for global soil moisture,here is one file https://echange-fichiers.inra.fr/get?k=f9DDllPKdUKs5ZNQwfq from the metadata ,the projection is cylindrical and the resolution is 25 km(it is based on authalic sphere based on International 1924 ellipsoid).As I want to compare with other data, I have to make them identical. - my other data are in WGS84 with 0.25*0.25 degree resolution

Dear list, My query follows on from a question I posted a few days ago. I have the following 2 sets of data: wetMeans[1] 9.904762[2] 6.344828[3] 6.346154[4] 6.855769[5] 9.074324[6] 9.953988[7] 13.482966[8] 14.546053[9] 10.841584[10] 9.752033[11] 6.739336[12] 8.955056burnMeans[1] 0.06214286[2] 0.05396552[3] 0.04096154[4] 0.05302885[5] 0.05831081[6] 0.07392638[7] 0.29969940[8] 0.25596217[9]

The volume of a polygon = 0. Polyhedra have volumes. This may be irrelevant, but if the lake is cylindrical == constant cross sectional area at all depths, then height doubles when the volume does and vice versa. Otherwise you have to know how area varies with height or use more sensible approximations thereto. Cheers, Bert On Tue, Dec 5, 2023, 20:13 javad bayat <j.bayat194 at

My goal is to prepare a thematic map of the US, with states shaded according to their values for a variable of interest. I would like to include an inset for Alaska in the upper left and an inset for Hawaii in the lower left. If possible, I'd like to use Albers conic projection, or something similar. Thus far I have tried using the maps package with its state database (which omits

Hello all, Need some suggestions on interesting use cases with R in the field of log processing. Any help would be greatly appreciated. -- With Thanks and Regards, Ramprakash Ramamoorthy, India, +91 9626975420 [[alternative HTML version deleted]]

Hello R-Group, I am new working with netcdf files and the raster package in R.I am trying to read in a netcdf file using the package "ncdf".I am able to get the lat, lon and parameter I need and can plot using fill.contour.Ultimately, I am trying to create a .asc file to reafd into GIS.I am using the package "raster" to read the parameter.When I read in with

Running R version 2.6.1 under Gentoo Linux, I'm trying to produce a thematic map of the USA using the gmaps package. The result thus far has two problems from my point of view. First, the projection (Miller cylindrical?) elongates southern states and flattens northern ones unattractively. I'd prefer Albers conic projection or something similar. Second, the inset for Alaska is placed

Hi, I am going to sound mean here, however I don't feel the document is "very comprehensive". Maybe concise is a better word. I quickly looked through the document. The biggest problem is that there is very little discussion on multivariate distributions. Noting that multivariate distributions play a critical role in statistical theory, plus are gaining an increasing number of

...isk -l /dev/loop1 reports: ?--- bash-4.2# fdisk -l /dev/loop1 Attention : identifiant de table de partitions GPT (GUID) d?tect? sur ? /dev/loop1 ? ! L'utilitaire sfdisk ne prend pas GPT en charge. Utilisez GNU Parted. Disque /dev/loop1 : 66 Mo, 66060288 octets 255 t?tes, 63 secteurs/piste, 8 cylindres, total 129024 secteurs Unit?s = secteur de 1 * 512 = 512 octets Taille de secteur (logique / physique) : 512 octets / 512 octets taille d'E/S (minimale / optimale) : 512 octets / 512 octets Identifiant de disque : 0x44533712 P?riph?rique Amorce D?but Fin Blocs Id Syst?me /dev/loop1p1 * 0 12902...

Hello, there!   Basically my problem is very clear. I would like to take a (numerical) integration of a function f(x,y) which can be quite complex of x and y, over a disk (x-a)^2+(y-b)^2<= r^2 (with r constant). However, after some search in R, I just cannot find a function in R that suits my purpose. Function Integrate applies to one dimensional, and adaptIntegrate to rectangle. In my case, it

Dear all; I am trying to calculate the volume of a polygon shapefile according to a DEM raster. I have provided some codes at the end of this email.I dont know if the codes are correct or not. Following this, I have another question too. I want to know if the volume of the reservoir rises or doubles, what would be the elevation? I would be more than happy if anyone could help me. Sincerely "

Hi, Ady wrote: > http://www.syslinux.org/archives/2015-October/024526.html I still have it in my mailbox: ADY4UEFI.IMG in ADY4UEFI.ZIP. The test results are the same as with Didier's partition image. Wrapped in an ISO and presented as -cdrom it reboots in cycles. Presented as -hda it boots as naked disk image and as part of a GPT enhanced ISO 9660. > the wiki page needs

Water engineer here. The standard approach is to 1) get the storage vs. elevation data from the designers of the reservoir or, barring that, 2) get the bathymetry data from USBR or state DWR, or, if available, get the DEM data from USGS if the survey was done before the reservoir was built or 3) get a boat+sonar with GPS? +lots of time and survey the bottom elevation yourself. Put the xyz

Dear all; Thank you for your reply. David has explained an interesting method. David I have DEM file of the region and I have extracted the xyz data from that. Also I can extract bathymetry data as xyz file. I have calculated the storage (volume) of reservoir at the current elevation. But the method I have used to calculate the volume is different from your method. I have crop DEM by the reservoir

Dear all, 1. How can I compute the intersecting area between 2 polygons ? 2. I have polygons with coordinates in decimal degrees (i.e. 13 deg 30 min = 13.5 decimal degrees). I want to compute their area and get the results in square meters or square kiometers. Can anyone give me a conversion coefficient or a pointer where I can find this information (sorry for this off topic question) ? Thanks

Hi, I guess this is a good time to start putting together a wish list for a video codec. I see that for audio the compression is around 10X for reasonable quality. I am sure this will start its own thread of conversation. For video you can do 40X fairly easily and the big task is to go to 80X or 100X with reasonable picture quality, say, a peak luma SNR of more than 30 dB. Uncompressed

Dear all, We are trying to fit a non linear model to dispersal data. It seems that sometimes when the fit of the model of the data is not very good we start getting singular gradient errors. However if we modify slightly the data this won't occurr. We have also tried changing the initial parameter values and the algorithm for fitting in nls but didn't help. So we ended up programming a