def view_data_file_head(self):
"""
view first parts of data file
"""
if self.tw_data_files.selectedIndexes() or self.tw_data_files.rowCount(
) == 1:
if self.tw_data_files.rowCount() == 1:
data_file_path = project_functions.media_full_path(
self.tw_data_files.item(0, 0).text(), self.project_path)
else:
data_file_path = project_functions.media_full_path(
self.tw_data_files.item(
self.tw_data_files.selectedIndexes()[0].row(),
0).text(), self.project_path)
file_parameters = utilities.check_txt_file(data_file_path)
if "error" in file_parameters:
QMessageBox.critical(
self, programName,
f"Error on file {data_file_path}: {file_parameters['error']}"
)
return
header = utilities.return_file_header(data_file_path)
if header:
w = dialog.View_data_head()
w.setWindowTitle(f"Data file: {Path(data_file_path).name}")
w.setWindowFlags(Qt.WindowStaysOnTopHint)
w.label.setVisible(False)
w.le.setVisible(False)
w.tw.setColumnCount(file_parameters["fields number"])
w.tw.setRowCount(len(header))
for row in range(len(header)):
for col, v in enumerate(header[row].split(
file_parameters["separator"])):
w.tw.setItem(row, col, QTableWidgetItem(v))
w.exec_()
else:
QMessageBox.critical(self, programName,
f"Error on file {data_file_path}")
else:
QMessageBox.warning(self, programName, "Select a data file")
def add_data_file(self, flag_path=True):
"""
user select a data file to be plotted synchronously with media file
Args:
flag_path (bool): True to store path of data file else False
"""
# check if project saved
if (not flag_path) and (not self.project_file_name):
QMessageBox.critical(self, programName, ("It is not possible to add data file without full path "
"if the project is not saved"))
return
# limit to 2 files
if self.tw_data_files.rowCount() >= 2:
QMessageBox.warning(self, programName , ("It is not yet possible to plot more than 2 external data sources"
"This limitation will be removed in future"))
return
fd = QFileDialog()
fd.setDirectory(os.path.expanduser("~") if flag_path else str(Path(self.project_path).parent))
fn = fd.getOpenFileName(self, "Add data file", "", "All files (*)")
file_name = fn[0] if type(fn) is tuple else fn
if file_name:
columns_to_plot = "1,2" # columns to plot by default
# check data file
r = utilities.check_txt_file(file_name) # check_txt_file defined in utilities
if "error" in r:
QMessageBox.critical(self, programName , r["error"])
return
if not r["homogeneous"]: # not all rows have 2 columns
QMessageBox.critical(self, programName, "This file does not contain a constant number of columns")
return
header = utilities.return_file_header(file_name)
if header:
w = dialog.View_data_head()
w.setWindowTitle("Data file: {}".format(Path(file_name).name))
w.setWindowFlags(Qt.WindowStaysOnTopHint)
w.tw.setColumnCount(r["fields number"])
w.tw.setRowCount(len(header))
for row in range(len(header)):
for col, v in enumerate(header[row].split(r["separator"])):
w.tw.setItem(row, col, QTableWidgetItem(v))
while True:
flag_ok = True
if w.exec_():
columns_to_plot = w.le.text().replace(" ", "")
for col in columns_to_plot.split(","):
try:
col_idx = int(col)
except ValueError:
QMessageBox.critical(self, programName, "<b>{}</b> does not seem to be a column index".format(col))
flag_ok = False
break
if col_idx <= 0 or col_idx > r["fields number"]:
QMessageBox.critical(self, programName, "<b>{}</b> is not a valid column index".format(col))
flag_ok = False
break
if flag_ok:
break
else:
return
else:
return
else:
return # problem with header
self.tw_data_files.setRowCount(self.tw_data_files.rowCount() + 1)
if not flag_path:
file_name = str(Path(file_name).name)
for col_idx, value in zip([PLOT_DATA_FILEPATH_IDX, PLOT_DATA_COLUMNS_IDX,
PLOT_DATA_PLOTTITLE_IDX, PLOT_DATA_VARIABLENAME_IDX,
PLOT_DATA_CONVERTERS_IDX, PLOT_DATA_TIMEINTERVAL_IDX,
PLOT_DATA_TIMEOFFSET_IDX],
[file_name, columns_to_plot,
"", "",
"", "60",
"0"]):
item = QTableWidgetItem(value)
if col_idx == PLOT_DATA_CONVERTERS_IDX:
item.setFlags(Qt.ItemIsEnabled)
self.tw_data_files.setItem(self.tw_data_files.rowCount() - 1, col_idx, item)
# substract first value
combobox = QComboBox()
combobox.addItems(["True", "False"])
self.tw_data_files.setCellWidget(self.tw_data_files.rowCount() - 1, PLOT_DATA_SUBSTRACT1STVALUE_IDX, combobox)
# plot line color
combobox = QComboBox()
combobox.addItems(DATA_PLOT_STYLES)
self.tw_data_files.setCellWidget(self.tw_data_files.rowCount() - 1, PLOT_DATA_PLOTCOLOR_IDX, combobox)