WeatherCat > WeatherCat Integration
Custom graphs anomaly
rnbryan:
I saw this anomaly again today. There were no sensor errors. See the attached graph.
elagache:
Dear rnbryan and WeatherCat troubleshooters,
--- Quote from: rnbryan on March 31, 2019, 04:38:50 AM ---I saw this anomaly again today. There were no sensor errors. See the attached graph.
--- End quote ---
Certainly a very strange phenomena and my hypothesis is definitely ruled out.
The next thing to check is whether this is only an appearance or it is actually what WeatherCat is recording as data. The WeatherCat data files are plain text files. The current (March) data file is:
~/WeatherCatData/Location1/2019/3_WeatherCatData.cat
The tilde ~ is the UNIX abbreviation for your home folder. It is best to make a copy of this file and then look inside. You can use TextEdit or better still a dedicated editor like BBEdit. There are comments at the top of the file that provide the connection between the keys and the data WeatherCat collects. It shouldn't take very long to see if these spikes in the graphs are actually getting recorded in the WeatherCat data files.
Please do keep us informed of what you might discover.
Cheers, Edouard
rnbryan:
Following your instructions, edouard, I find that these varying points on the graph are from the WeatherCatData. For example, at 9:30AM on March 30, the external temperature is 0.11dC. At 9:52 AM, T is 4.67 dC. At 10:19 AM, T is 0.11 dC. Thanks for your help with this problem.
elagache:
Dear rnbryan and WeatherCat troubleshooters,
--- Quote from: rnbryan on April 05, 2019, 09:41:38 PM ---Following your instructions, edouard, I find that these varying points on the graph are from the WeatherCatData. For example, at 9:30AM on March 30, the external temperature is 0.11dC. At 9:52 AM, T is 4.67 dC. At 10:19 AM, T is 0.11 dC. Thanks for your help with this problem.
--- End quote ---
Since you are seeing these values in the data, it is obviously not a graph rendering issue at all. I've never heard of any other WeatherCat installation having a problem like this and Davis stations are the most popular for WeatherCat. In addition, the Davis station downloading protocol is very old and well-established. This is well-proven code.
What you are observing is very out of the ordinary and that suggests to me that your console may be experiencing some sort of issues. The best confirmation would be to observe the console during such an anomaly and see if it displays the temperature reported on the WeatherCat graph.
Since you are observing something odd, you might contact Davis technical support about it. Here is the webpage:
https://support.davisinstruments.com/
It now supports a live-chat feature that might be suitable. Alternatively, there is a technical support phone number at the top of the page. If you can spare the time of waiting in line, I've found talking with a technical support person to be the most constructive.
Do let us know what you uncover.
Cheers, Edouard
xairbusdriver:
The graph you showed originally seemed to have a constant value. Your last one shows differing values. It might be time to give Mr. Crossley's idea of changing ISS channels. That's not a difficult action and is one of the simplest tests.
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