Rainfall Chart

[water01]

I not sure if this a problem with the new charts jscript or just a strange piece of mapping because of a strange piece of data.

For some reason I got some rainfall logged as -0.0 and when that is mapped in Cumulus MX charts it is not the same 0.0 and therefore shows a sort of negative spike!! I know it is -0.0 because it shows up in the window when you run the mouse over it.

Looks a bit strange!!

[steve]

I don't think it's anything to do with the changes to the chart. I wonder if somehow the rate calculation came out slightly negative and that got rounded to the rather odd -0.0. I would guess it happened around a restart and was due to rounding of the stored rain counter values. I'll put a check in for it.

[water01]

It is on my website now so see here http://www.dmjsystems.co.uk/weather/trends.php so you can run the mose over it if you need further info.

[steve]

There are a few rain rate values of -0.03 inches, so that's not just down to rounding. That does remind me that I need to make the scale show two decimals for inches. Maybe the counter went down for a period, or it could be a bug - could you upload the diags file, please?

[water01]

Here it is.

Added the 3011 as well as I switched to 3012 as soon as you posted last night.

[steve]

I've changed my mind - it is down to rounding. I had forgotten that the 0.03 for the rate actually only represents a difference of 0.03/12 = 0.0025. It happened just after you restarted Cumulus, as the current counter was being compared to the rounded figures stored in the log file. I think the code I've added will fix it, but I'll check to see what I did in Cumulus 1 for this.

[Nykita]

There are a few rain rate values of -0.03 inches, so that's not just down to rounding. That does remind me that I need to make the scale show two decimals for inches. Maybe the counter went down for a period, or it could be a bug - could you upload the diags file, please?

Did you do the change for the rain charts yet? I'm using CMX3013. I am showing 2 decimal places (0.09in) on the dashboard but only one on the charts page (0.1in) It's not really a big deal, I just wanted to let you know about it.

[steve]

No, not yet. I'm intending to make the number of decimal places in MX configurable, so I'll tie this change into that when I do it.

[Nykita]

Thanks for the update, I thought I ma have messed something up... I also noticed it is 2 places in the current data window and gauges also.. I'll bet you wish people would conform to world standards.....

[steve]

I'm in no position to complain. I use the 'standard' mm, hPa/mb, deg C... and mph.