How to get only numbers from a string

[EddyG]

Use a split function with a space as delimiter.

Code: Select all

function split(s, delimiter)
    result = {};
    for match in (s..delimiter):gmatch("(.-)"..delimiter) do
        table.insert(result, match);
    end
    return result;
end

[MikeF]

In Python, you can just do this (in your specific case):

Code: Select all

Data = parsedJson["result"][1]["Data"][:-4]

which will drop off the last 4 characters.

[waaren]

How to get rid of the kWh ? So the outcome will be 2.700

Use

Code: Select all

print("Data:" .. Data:match('%d+'))

in Lua / dzVents