1.) I found out that openvibe do support GDF, BCI competition lib files, brainamp format, scv, and openvibe native format. and i know that GDF files uses the GDF file reader/write as its box. and Openvibe native format uses the generic file reader box. So what about the other file types, what boxes do they use ?
brainamp format -
scv -
BCI competition lib files -
Are there any example scenarios that you'l have used using the above file types ?
2.) What are .OV files ? where can i find additional information about that file type ? do you know a possible converter where i can convert gdf to ov file type ?
3.) This is about the graz visualisation box. The Red arrow is the visual cue , and the blue bar is the current classification. (am i right here ?) . when the user is asked to do a right hand motor imaginary why does it always start first with the arrow pointing to the right side followed by the blue bar ?
4.) There's an example 'Motor-Imagery-bci-2-Classifier-Training.xml' that trains the program for right hand and left hand motor imaginary. then when i ran the example 'Motor-Imagery-bci4_reply.xml' (in offline mode) with the configuration file created in the 'Motor-Imagery-bci-2-Classifier-Training.xml' it identifies right and left hand motor imaginary.
a.) what i need to do is to train the program to identify up and down(instead of left and right). So how do i modify the 'Motor-Imagery-bci-2-Classifier-Training.xml' and 'Motor-Imagery-bci4_reply.xml' to do it. (in brief > the arrows and the blue bar should move UP when the user is doing a right hand motor imaginary and Down to a left hand motor imaginary)
(i tried editing stimulation based epoching property stimulation to epoch from to OVTK_GDF_UP and OVTK_GDF_DOWN (in the trainer) and in the classifier processor i edited class 1 label and class 2 label to OVTK_GDF_UP and OVTK_GDF_DOWN respectly, but it didn't change the directions) What should i do ?
5.) in the code of ovpCGrazVisualization.cpp ;
Code: Select all
if(m_f64BarScale<0)
{
l_iRectangleTopLeftX -= l_iRectangleWidth;
gdk_pixbuf_render_to_drawable(m_pLeftBar, m_pDrawingArea->window, NULL,
gdk_pixbuf_get_width(m_pLeftBar)-l_iRectangleWidth, 0,
l_iRectangleTopLeftX, l_iRectangleTopLeftY, l_iRectangleWidth, l_iRectangleHeight,
GDK_RGB_DITHER_NONE, 0, 0);
}
else
{
gdk_pixbuf_render_to_drawable(m_pRightBar, m_pDrawingArea->window, NULL, 0, 0, l_iRectangleTopLeftX, l_iRectangleTopLeftY, l_iRectangleWidth, l_iRectangleHeight, GDK_RGB_DITHER_NONE, 0, 0);
}
Code: Select all
m_f64BarScale
6.) I was given a few GDF files, and i tried to use them in an openvibe application. i got the following error message.
[WARNING] At time 0 (0x0)<Box algorithm::GDF file reader> Can't handle GDF files
with channels having different sampling rates!
[WARNING] Box algorithm <GDF file reader> has been deactivated because initializ
ation phase returned bad status
7.) Finally a very humble request. does anyone have a right left foot movement GDF file ? that works with openvibe GDF file reader box?