I like Google Charts a lot, but have run into something I haven't seen
posted anywhere.
In short, I am using different controls to select which row of a 36 row
json file to display based on a column labeled "Index".
If I set the columns as below, I can exclude the Index column with a
ProgrammaticSlider set as a NumberRangeFilter. The problem is that it
seems impossible to set the Slider above 9 using a control. The chart
becomes unresponsive after selecting any double-digit row.
This is what I have when attempting this :
programmaticChart.setView({'columns': [0, 1]}); //this works, but only
for 9 rows!
cols": [
{"id":"","label":"Year","pattern":"","type":"string"},
{"id":"","label":"Cases","pattern":"","type":"number"},
{"id":"","label":"Index","pattern":"","type":"number"}
],
On the other hand, I can set the Slider to an Index up to 36 using
programmaticChart.setView({'columns': [0, 1, 2]}) and select the row I want
- which of course doesn't help because there's no need to see columns with
the index.
However setting the columns to skip column 1 creates the following error
(and the code and json columns are below):
"Invalid column index 2. Should be an integer in the range [0-1]."
.
programmaticChart.setView({'columns': [0, 2]}); //this now blows up with
the following column definitions
"cols": [
{"id":"","label":"Year","pattern":"","type":"string"},
{"id":"","label":"Index","pattern":"","type":"number"},
{"id":"","label":"Cases","pattern":"","type":"number"}
],
Here's three rows of the json file I want to use displaying column 2 as an
example:
{"c":[{"v":"2013","f":null},{"v":1,"f":null},{"v":"10","f":null}]},
{"c":[{"v":"2013","f":null},{"v":2,"f":null},{"v":"20","f":null}]},
{"c":[{"v":"2013","f":null},{"v":3,"f":null},{"v":"30","f":null}]},
Any help would be greatly appreciated!
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