Function addData

src/Utils/SerialData.js:136–204

(data)

    var onVal = parser.on('data', addData)

    function addData(data) {
        // If there is decimation, don't add the data until the decimation index is reached
        if (decIndex >= GlobalSettings.global.decimation) {
            decIndex = 1;
        } else {
            decIndex += 1;
            return; // Dont add the data if the user is decimating
        }
        //--------------------- regular update --------------------- //
        SerialDataObject.Iter += 1;// Iterate 
        // Computations for the sample rate (only do this once every NsampleRateUpdate samples)
        if (SerialDataObject.Iter % SerialDataObject.NsampleRateUpdate === 0) {
            if (SerialDataObject.sampleHistory.length > 1) {
                var deltaT = SerialDataObject.timeHistory[SerialDataObject.timeHistory.length - 1] - SerialDataObject.timeHistory[0];
                var samples = SerialDataObject.sampleHistory[SerialDataObject.sampleHistory.length - 1] - SerialDataObject.sampleHistory[0];

                SerialDataObject.sampleRate = samples / deltaT * 1000;
            }
        }

        // Push the raw data (unless its NaN)
        SerialDataObject.rawData.push(data);
        if (SerialDataObject.rawData.length >= SerialDataObject.bufferSize) {
            // If the buffer is full, remove the first line of the raw data
            SerialDataObject.rawData.shift();
        }

        // If we're recording, write each data row to the file
        writeDataIfRecording(data);
        
        // Now parse the numeric data
        var splitData = data.split(/\s+|,\s+/);
        var nums = splitData.map(parseFloat);
        var t = 0;
        if (GlobalSettings.global.firstColumnTime) {
            t = nums[0];
            nums = nums.slice(1, nums.length);
        }
        else {
            t = performance.now();
        }

        // Push the data into the data array (if there arent any NaNs)
        // also push the sample/time history
        if (nums.every((value) => { return !isNaN(value) })) {
            SerialDataObject.data.push(nums);
            SerialDataObject.sampleHistory.push(SerialDataObject.Iter);
            SerialDataObject.timeHistory.push(t);
        }

        var n = SerialDataObject.data.length;
        if (n > SerialDataObject.bufferSize) {
            // If the data has filled the buffer, resize it
            const resize = (v) => {
                return v.slice(v.length - SerialDataObject.bufferSize, v.length);
            }
            SerialDataObject.data = resize(SerialDataObject.data);
            SerialDataObject.sampleHistory = resize(SerialDataObject.sampleHistory);