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Tools for air quality data analysis

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Hi again, I am getting this error: > Error in gam(myform, data = mydata) : > Not enough (non-NA) data to do anything meaningful when I run the trajLevel function...

question

Can I know a weighting factor and how it is calculated? Can it be adjusted? filter(traj, lon > -20, lon < 20, lat > 45, lat < 60) %>% trajLevel(...

question

I am trying to execute run hysplit with higher resolution meteorological files. When I execute the same command using the reanalysis met file it works ```r data_out

bug
hysplit 🌐

Hi, hope everyone is doing well. I was using a mix of rollingMean and timeAverage function, and this make me think that the function should be inside of the timeAverage....

enhancement

Would be nice to have annotate = "ws" option in trendLevel, as exists in calendarPlot ![example](https://cloud.githubusercontent.com/assets/16103745/13302058/b2f6500e-db26-11e5-834e-04574628bd27.png) Many thanks Julio

enhancement
trends 📉

I am using aqstats to calculate percentiles for the PM10 concentrations. The result I'm getting seems to be a percentile value for hourly observations. For example, for 2012 in Aberdeen...

utilities 🛠

Dear @davidcarslaw I am new with openair, and fairly new with R. I cannot for the life of me figure out how to manually adjust the x-axis tick marks. For...

utilities 🛠

Dear David, I have been playing around with a large dataset and I am looking to source apportion the annual mean at a motorway continuous monitor using wind direction analysis....

question
directional 🧭

Is it possible to choose the threshold value for calms? For example, if I would like to show as calms all the hours that are below a value of 0.5...

enhancement
directional 🧭

Hi, We currently use the timeVariation plot to compare observations with model output. I have two questions regarding modifying the plot. 1) Right now in the plot the shaded region...

trends 📉