When you write an ESRI Shapefile from R, writeOGR assumes your numeric fields are real numbers and so you get a lot of redundant zeros appended. This is misleading and distracting when you… Continue reading → [Read more...]

Ordnance Survey have a great OpenRoads dataset, but unfortunately it contains a column called ‘primary’, which is a keyword in SQL. This makes it challenging/impossible to import the OpenRoads dataset into a SQL… Continue reading → [Read more...]

I was supplied spatial point data this summer where the locations were detailed in Ordnance Survey’s National Grid (NGR) format. If you’re not familiar with it, rather than using eastings and northings (in… Continue reading → [Read more...]

I spoke on 14th September at the EARL (Effective Applications of the R Language) conference in London. This is event is concerned exclusively with the R programming language and it was the first… Continue reading → [Read more...]

John Yagecic put out a great little blog post with accompanying app this week. He looked at the uncertainty from using vague parameters in Manning’s equation to estimate river flow. He made the… Continue reading → [Read more...]

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A while back I wrote a post on using the R tool tapply, which is my most popular post. Tapply allows you to repeat a function over a vector split into groups, e.g.… Continue reading → [Read more...]

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Following on from my previous post about September weather, it seems appropriate (for my research and blog) to look at winter weather specifically for Scotland. This post again uses Met Office data. I… Continue reading → [Read more...]