issue in pre-loading images
Dear all,
I am preparing an experiment with video stimuli. Because I want a finer control of the videos, I have converted them in a series of images, one each frame, and a series of csv files with the paths of each image/frame, one csv file each video.
Therefore, in the opensesame script I wrote the following "prepare" script, just to see if the procedure might work:
path = [exp.pool["STIMOLI_SCALED/FRAMES_1200_CUT_BICCHIERE_afferramento_Lat_1_MVI_0630/001.png"],exp.pool["STIMOLI_SCALED/FRAMES_1200_CUT_BICCHIERE_afferramento_Lat_1_MVI_0630/002.png"],exp.pool["STIMOLI_SCALED/FRAMES_1200_CUT_BICCHIERE_afferramento_Lat_1_MVI_0630/003.png"],exp.pool["STIMOLI_SCALED/FRAMES_1200_CUT_BICCHIERE_afferramento_Lat_1_MVI_0630/004.png"],exp.pool["STIMOLI_SCALED/FRAMES_1200_CUT_BICCHIERE_afferramento_Lat_1_MVI_0630/005.png"],exp.pool["STIMOLI_SCALED/FRAMES_1200_CUT_BICCHIERE_afferramento_Lat_1_MVI_0630/006.png"]] exp.canvas_pictures = [] i = 0 for thispath in path: tmp = canvas(self.experiment) tmp.image(path[i],y=0,x=0) exp.canvas_pictures.append(tmp) i += 1
Then, in the run part, I simply wrote:
l = [] for img in exp.canvas_pictures: t = img.show() l.append(t) exp.sleep(40) for t in l: print(t) print("stop")
In this way, everything worked very well.
Then, I changed the "prepare" part in order to get the images paths from the csv file:
path = [] csvpath = exp.get_file('stimuli/FRAMES_1200_CUT_BICCHIERE_afferramento Lat_1_MVI_0630.csv') j = 0 with open(csvpath) as file: stimuli = file.readlines() for stim in stimuli: tmp = str(stim.split(";")[2]) tmp = tmp.replace("\"","") if j > 0: path.append(exp.pool[tmp]) j += 1 exp.canvas_pictures = [] i = 0 for thispath in path: tmp = canvas(self.experiment) tmp.image(thispath,y=0,x=0) exp.canvas_pictures.append(tmp) i += 1
But something is not working, because OpenSesame returned the following error:
- item:
new_inline_script
- phase:
prepare
- item-stack:
experiment[run].father_loop[run].father_sequence[prepare].new_inline_script[prepare]
- time:
Thu Oct 15 17:27:58 2020
- exception type:
osexception
- exception message: ` "STIMOLI_SCALED\FRAMES_1200_CUT_BICCHIERE_afferramento_Lat_1_MVI_0630\001.png " does not exist
As you can see, the problem is not the impossibility to read the csv file.
I have also done some tests, and it is reading it correctly, with the correct path for the file.
I have even tried to obtain using python within OpenSesame the complete path for the file by using exp.experiment_path.
In this way the path was correct (copy and paste in windows explorer opened the image), but OpenSesame returned the same error.
What I am doing wrong?
Thanks in advance for your time.
Michele
PS: in attachment, one exemplificative csv file
Comments
Do not bother to answer, I have found my solution: