Displaying 3 results from an estimated 3 matches for "vlasimski".
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vlasimsky
2011 Jan 12
3
Problems creating a PNG file for a dendrogram: "Error in plot.window(...) : need finite 'xlim' values"
Has anyone successfully created a PNG file for a dendrogram?
I am able to successfully launch and view a dendrogram in Quartz. However, the dendrogram is quite large (too large to read on a computer screen), so I am trying to save it to a file (1000x4000 pixels) for viewing in other apps. However, whenever I try to initiate a PNG device, I get a "need finitite 'xlim' values"
2010 Nov 08
2
A more efficient way to roll values in an irregular time series dataset?
Does anyone recommend a more efficient way to "roll" values in a time series dataset?
I merged a bunch of different time series datasets (10's of thousands of them) whose observation dates and sampling interval differ. Some time series observations are reported at the beginning of the month, some at the end, some on Mondays, some on Wednesday, some annually, etc.
In the
2010 Nov 24
5
Performance tuning tips when working with wide datasets
Does anyone have any performance tuning tips when working with datasets that are extremely wide (e.g. 20,000 columns)?
In particular, I am trying to perform a merge like below:
merged_data <- merge(data1, data2, by.x="date",by.y="date",all=TRUE,sort=TRUE);
This statement takes about 8 hours to execute on a pretty fast machine. The dataset data1 contains daily data going