Importing an existing RAVEN workspace (.rws) file will add the contents of that workspace to the existing RAVEN workspace.
Importing raw data in the form of a comma-seperated value file (.csv) or tab-delimited text file (.txt) will create a new data object containing the imported data. A single plot will also be created, with the second data column plotted versus the first data column.
The file to be imported can include any number of columns/rows of data. The last non-numerical line in the file before the data begins is used to label the data columns (and must have as many entries as there are data columns).
Currently RAVEN doesn’t associate units or data types with imported data. Therefore, all imported data is plotted using the actual imported numeric values, and no unit conversion is performed (even if the RAVEN unit system is changed).
Imported coordinates (as described below) are given types, since there is no question that they represent distance. If coordinates are detected when raw data is imported, a prompt will appear asking which units the coordinates are stored in. Since the length scale of interest for RAVEN work is often rather small; when plotting in SI, all coordinates are converted to millimeters.
If a cycle is made using imported data, the unit system can be selected during cycle creation.
For the purpose of queries, it may be useful to define coordinates for the data columns. Coordinates are defined by adding up to three (one for each of X, Y, Z) additional lines to the data file, prior to the column header line. Each coordinate line must start by defining the coordinate being defined, using one of the labels “xcoord”, “ycoord”, or “zcoord”. Next, a list of coordinates corresponding to the data columns is required. No coordinate value is given for the first column (which usually represents ‘time’). Coordinate values can be empty for any of the data columns.
Example of acceptable CSV data file (the ‘AC Temp’ and ‘AC Pressure’ columns have no coordinates):
xcoord, , , 1.0, 1.0, 1.0 zcoord, , , 0.0, 0.5, 1.0 Time, AC Temp, AC Pressure, Temp 1, Temp 2, Temp 3 0.0, 20.0, 101.3, 20.0, 20.0, 20.0 1.0, 24.0, 101.3, 24.0, 22.0, 21.0 2.0, 28.0, 101.3, 28.0, 24.0, 22.0 3.0, 32.0, 101.3, 32.0, 26.0, 23.0 4.0, 36.0, 101.3, 36.0, 28.0, 24.0
Once data has been imported, depending on the amount of data, a prompt may appear suggesting the data be thinned (to improve performance while working with the data). There are two thinning methods provided. Data thinning can be applied/removed at any time.
There is currently no way to update/replace imported data in the workspace. It is very important to make sure your raw data is correct before beginning to work with it in RAVEN, as if you need to re-import the data, you will have to re-do all the analyses.