Publications by Tim Salabim
read raster data in parallel
Use library(parallel) to read raster data in parallel fashion Use library(parallel) to read raster data in parallel fashion Recently, I have been doing some analysis for a project I am involved in. In particular, I was interested what role pacific sea surface temperatures play with regard to rainfall in East Africa. I spare you the details as I...
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Plotting large amounts of atmospheric data
Related To leave a comment for the author, please follow the link and comment on their blog: metvurst. R-bloggers.com offers daily e-mail updates about R news and tutorials about learning R and many other topics. Click here if you're looking to post or find an R/data-science job. Want to share your content on R-bloggers? click here if you ha...
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(Semi-)automating the R markdown to blogger workflow
In his recent post 100 most read R posts for 2012 (stats from R-bloggers) – big data, visualization, data manipulation, and other languages Tal Galili – the guy behind R-Bloggers – presents his wishlist for 2013. Among other things he states “The next step will be to have a “publish to your WordPress/blogger” button right from the RS...
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Make plot panels fit the distribution of your data
I am a big fan of lattice/latticeExtra. In fact, nearly all visualisations I have produced so far make use of this great package. The possibilities for customisation are endless and the amount of flexibility it provides is especially valuable for producing visualisations in batch mode/programatically. Today I needed to visualise some...
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metvurst now a package (repository moved to GitHub)
Inspired by a post on PirateGrunt, I finally managed to pack metvurst up and turn it into a proper R-Package (the fact that I’m on holiday and have some time also helped). As a side-effect of this, the repository has been moved from google code to GitHub. As I use RStudio for developping R-code, this shift seemed inevitable, as the integration ...
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renaming data frame columns in lists
OK, so the scenario is as follows: we have a list of 2 elements which in turn are again lists with 2 elements (each of which is a data frame). None of the elements in question carry names (neither the list entries nor the data frames) we want to only set the names of the data frames that are buried 2 levels down the main list First we create s...
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reading raster data using library(parallel)
Recently, I have been doing some analysis for a project I am involved in. In particular, I was interested what role pacific sea surface temperatures play with regard to rainfall in East Africa. I spare you the details as I am currently writing all this up into a paper which you can have a look at once published. For this analysis, however, I am p...
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visualising large amounts of hourly environmental data
It is Sunday, it's raining and I have a few hours to spend before I am invited for lunch at my parents place. Hence, I thought I'd use the time to produce another post. It has been a while since the last post as I have been in Africa for about two months for yet another stint of fieldwork on the great Kilimanjaro mountain… This time I want to i...
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visualising diurnal wind climatologies
In this post I want to highlight the second core function of the metvurst repository (https://github.com/tim-salabim/metvurst): The windContours function It is intended to provide a compact overview of the wind field climatology at a location and plots wind direction and speed as a function of the hour of day. direction is plotted as frequencies...
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resizing plot panels to fit data distribution
I am a big fan of lattice/latticeExtra. In fact, nearly all visualisations I have produced so far make use of this great package. The possibilities for customisation are endless and the amount of flexibility it provides is especially valuable for producing visualisations in batch mode/programatically. Today I needed to visualise some precipitatio...
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