How get values from ch
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Hello i got this ch in workspace and i want to get the values "price" from it for plot them, how can i put in a cell?
I got this.
[{"date": "1560160129", "tid": 90322567, "price": "7727.41", "type": 0, "amount": "0.00783400"}, {"date": "1560160115", "tid": 90322553, "price": "7725.96", "type": 0, "amount": "0.08018985"}]
Thank you
Regards
2 个评论
Bob Thompson
2019-6-10
编辑：Bob Thompson
2019-6-10
If I am interpretting what you have posted correctly you have two cells, each which contain five strings, and you want to extract the numeric value following 'price'? How are you importing the data, does it need to be in strings?
With what you have now I would suggest using a combination of regexp, str2num, and possibly strfind.
EDIT** I just realized that all of the links were incorrect. They have been fixed.
采纳的回答
Bob Thompson
2019-6-10
As far as I can tell the easiest way to do what you're asking would be something like the following:
price = str2num(regexp(string,'"price": "(\d*.\d*)"','tokens'));
You may have some issues with cells being too deep, but you can pull the price information further out if needed.
2 个评论
JM_Cortes
2019-6-10
Bob Thompson
2019-6-10
So, this is what I was saying by having extra depth to the array (each cell you see contains a 1x1 cell with the actual string). Personally, I find it very frustrating to deal with, but regexp is too useful for working with strings to ignore. Luckily, in this case the solution is fairly simple.
ps = regexp(string,'"price": "(\d*.\d*)"','tokens');
ps = [ps{:}];
price = str2double(ps);
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