I love the Belchertown skin, but I am uncomfortable with the very long
processing time to create the highcharts. I am pondering the ability to
run the JSON charts for day charts, and to switch to the weewx standard
charts for week, month, and year. So what I am doing now is trying to
recreate the JSON chart look with the imagegenerator.
My current status is attached. The top is the imagegenerator version and
the bottom is the highcharts / JSON version. The biggest difference I am
ignoring, where highcharts uses "today" versus imagegenerator using "last
24 hours". That won't be important for weekly+ periods.
The first hurdle was fonts. The highcharts use Lucida, which is
proprietary to Macs. Otherwise, the skin uses Lato, which is opensource
and available. Installing that font and using it in the charts resolves
that issue completely (at least on my screen!). I might continue to seek
an on-demand online font (Google font?) that allows everyone to see the
same thing; I doubt visitors will want to install a font,
But now I am puzzled as to how to solve the other obvious issues:
- How do I get rid of the vertical grid lines?
- How do I move the labels from the top to the bottom; I am supposing
sample lines are impossible.
- I am being driven nuts by the colors. They should be blue, black,
green, orange from left to right. No matter what I do, they are shown
orange, black, green, and blue.
Here is what I tried first (excerpted):
[ImageGenerator]
# Default colors for the plot lines. These can be overridden for
# individual lines using option 'color'
chart_line_colors = 0x7cb5ec, 0x434348, 0x90ed7d, 0xf7a35c, 0x8085e9,
0xf15c80, 0xe4d354, 0x2b908f, 0xf45b5b, 0x91e8e1
# Default fill colors for bar charts. These can be overridden for
# individual bar plots using option 'fill_color'
chart_fill_colors = 0x7cb5ec, 0x434348, 0x90ed7d, 0xf7a35c, 0x8085e9,
0xf15c80, 0xe4d354, 0x2b908f, 0xf45b5b, 0x91e8e1
However, it does not use the colors in that order. Is it alphabetical?
No matter, I tried,
[[[daytempdew]]]
[[[[outTemp]]]]
color = 0x7cb5ec
[[[[dewpoint]]]]
color = 0x434348
[[[[windchill]]]]
color = 0x90ed7d
[[[[heatindex]]]]
color = 0xf7a35c
[[[daywind]]]
[[[[windSpeed]]]]
color = 0x7cb5ec
[[[[windGust]]]]
color = 0x434348
The comments and the guide suggests using color = should overwrite whatever
is the default but they are not using the specified colors. You can see it
most easily on the wind graph.
I am generally happy so far, in that generating the 22 charts using
imagegenerator takes .53 seconds compared to 134 seconds using the
highcharts. I just would like to tweak the look and I am confounded by the
colors.
BTW, the url is https://hathaway.house/weewx/belchertown/
Dave
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