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Dialog box Tkinter

By kidd, in Programare

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kidd Newbie

kidd

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Posted (edited)

Salutare, 

Incerc sa implementeaz un dialog box pentru selectarea unui working directory pentru un script de Python. As vrea sa fac in asa fel incat scriptul sa nu aiba niciun working directory prestabilit ci sa trebuiasca definit atunci cand e rulat scriptul printr-un un mic dialog box.
Asta e scriptul:
  

# import modules
import os, numpy, sys, time
from osgeo import gdal, ogr
from osgeo.gdalconst import *
startTime = time.time()
# set the working directory
os.chdir(r'F:\NDVI_Py\data')
# register all of the GDAL drivers
gdal.AllRegister()
# open the image
inDs = gdal.Open('L82015.img', GA_ReadOnly)
if inDs is None:
  print 'Could not open L82015.img'
  sys.exit(1)
# get image size
rows = inDs.RasterYSize
cols = inDs.RasterXSize
bands = inDs.RasterCount
# get the bands and block sizes
inBand4 = inDs.GetRasterBand(4)
inBand5 = inDs.GetRasterBand(5)
blockSizes = inBand4.GetBlockSize()
xBlockSize = blockSizes[0]
yBlockSize = blockSizes[1]
# create the output image
driver = gdal.GetDriverByName('HFA')
outDs = driver.Create('ndvi_L82015.img', cols, rows, 1, GDT_Float32)
if outDs is None:
  print 'Could not create ndvi_L82015.img.img'
  sys.exit(1)
outBand = outDs.GetRasterBand(1)
# loop through the rows
for i in range(0, rows, yBlockSize):
  if i + yBlockSize < rows:
    numRows = yBlockSize
  else:
    numRows = rows - i
  # loop through the columns
  for j in range(0, cols, xBlockSize):
    if j + xBlockSize < cols:
      numCols = xBlockSize
    else:
      numCols = cols - j
    # read the data in
    data4 = inBand4.ReadAsArray(j, i, numCols, numRows).astype(numpy.float)
    data5 = inBand5.ReadAsArray(j, i, numCols, numRows).astype(numpy.float)
    # do the calculations
    mask = numpy.greater(data4 + data5, 0)
    ndvi = numpy.choose(mask, (-99, (data5 - data4) / (data5 + data4 + 0.00000000001)))
    # write the data
    outBand.WriteArray(ndvi, j, i)
# flush data to disk, set the NoData value and calculate stats
outBand.FlushCache()
outBand.SetNoDataValue(-99)
stats = outBand.GetStatistics(0, 1)
# georeference the image and set the projection
outDs.SetGeoTransform(inDs.GetGeoTransform())
outDs.SetProjection(inDs.GetProjection())
# build pyramids
gdal.SetConfigOption('HFA_USE_RRD', 'YES')
outDs.BuildOverviews(overviewlist=[2,4,8,16,32,64,128])
inDs = None
outDs = None
print 'NDVI Calculated and Outputted to File F:\NDVI_Py\data\L82015.img'
print 'script took', time.time() - startTime, 'seconds to run'

Stiu ca se foloseste tkFileDialog.askdirectory  pt asta dar nu stiu cum ar trebui scris in loc de: 

# set the working directory
os.chdir(r'F:\NDVI_Py\data')

Apreciez orice sfat. Multumesc!

Edited by kidd
  • Active Members
MrGrj Explorer

MrGrj

Posted
  • Active Members
Posted (edited)
Spoiler
1 hour ago, kidd said:

Salutare, 

Incerc sa implementeaz un dialog box pentru selectarea unui working directory pentru un script de Python. As vrea sa fac in asa fel incat scriptul sa nu aiba niciun working directory prestabilit ci sa trebuiasca definit atunci cand e rulat scriptul printr-un un mic dialog box.
Asta e scriptul:
  



# import modules
import os, numpy, sys, time
from osgeo import gdal, ogr
from osgeo.gdalconst import *
startTime = time.time()
# set the working directory
os.chdir(r'F:\NDVI_Py\data')
# register all of the GDAL drivers
gdal.AllRegister()
# open the image
inDs = gdal.Open('L82015.img', GA_ReadOnly)
if inDs is None:
  print 'Could not open L82015.img'
  sys.exit(1)
# get image size
rows = inDs.RasterYSize
cols = inDs.RasterXSize
bands = inDs.RasterCount
# get the bands and block sizes
inBand4 = inDs.GetRasterBand(4)
inBand5 = inDs.GetRasterBand(5)
blockSizes = inBand4.GetBlockSize()
xBlockSize = blockSizes[0]
yBlockSize = blockSizes[1]
# create the output image
driver = gdal.GetDriverByName('HFA')
outDs = driver.Create('ndvi_L82015.img', cols, rows, 1, GDT_Float32)
if outDs is None:
  print 'Could not create ndvi_L82015.img.img'
  sys.exit(1)
outBand = outDs.GetRasterBand(1)
# loop through the rows
for i in range(0, rows, yBlockSize):
  if i + yBlockSize < rows:
    numRows = yBlockSize
  else:
    numRows = rows - i
  # loop through the columns
  for j in range(0, cols, xBlockSize):
    if j + xBlockSize < cols:
      numCols = xBlockSize
    else:
      numCols = cols - j
    # read the data in
    data4 = inBand4.ReadAsArray(j, i, numCols, numRows).astype(numpy.float)
    data5 = inBand5.ReadAsArray(j, i, numCols, numRows).astype(numpy.float)
    # do the calculations
    mask = numpy.greater(data4 + data5, 0)
    ndvi = numpy.choose(mask, (-99, (data5 - data4) / (data5 + data4 + 0.00000000001)))
    # write the data
    outBand.WriteArray(ndvi, j, i)
# flush data to disk, set the NoData value and calculate stats
outBand.FlushCache()
outBand.SetNoDataValue(-99)
stats = outBand.GetStatistics(0, 1)
# georeference the image and set the projection
outDs.SetGeoTransform(inDs.GetGeoTransform())
outDs.SetProjection(inDs.GetProjection())
# build pyramids
gdal.SetConfigOption('HFA_USE_RRD', 'YES')
outDs.BuildOverviews(overviewlist=[2,4,8,16,32,64,128])
inDs = None
outDs = None
print 'NDVI Calculated and Outputted to File F:\NDVI_Py\data\L82015.img'
print 'script took', time.time() - startTime, 'seconds to run'

Stiu ca se foloseste tkFileDialog.askdirectory  pt asta dar nu stiu cum ar trebui scris in loc de: 



# set the working directory
os.chdir(r'F:\NDVI_Py\data')

Apreciez orice sfat. Multumesc!

 

 

Ai citit documentatia ? Ai acolo un exemplu cu exact ce iti trebuie:

  

import Tkinter, Tkconstants, tkFileDialog

class TkFileDialogExample(Tkinter.Frame):

  def __init__(self, root):

    Tkinter.Frame.__init__(self, root)

    # options for buttons
    button_opt = {'fill': Tkconstants.BOTH, 'padx': 5, 'pady': 5}

    # define buttons
    Tkinter.Button(self, text='askopenfile', command=self.askopenfile).pack(**button_opt)
    Tkinter.Button(self, text='askopenfilename', command=self.askopenfilename).pack(**button_opt)
    Tkinter.Button(self, text='asksaveasfile', command=self.asksaveasfile).pack(**button_opt)
    Tkinter.Button(self, text='asksaveasfilename', command=self.asksaveasfilename).pack(**button_opt)
    Tkinter.Button(self, text='askdirectory', command=self.askdirectory).pack(**button_opt)

    # define options for opening or saving a file
    self.file_opt = options = {}
    options['defaultextension'] = '.txt'
    options['filetypes'] = [('all files', '.*'), ('text files', '.txt')]
    options['initialdir'] = 'C:\\'
    options['initialfile'] = 'myfile.txt'
    options['parent'] = root
    options['title'] = 'This is a title'

    # This is only available on the Macintosh, and only when Navigation Services are installed.
    #options['message'] = 'message'

    # if you use the multiple file version of the module functions this option is set automatically.
    #options['multiple'] = 1

    # defining options for opening a directory
    self.dir_opt = options = {}
    options['initialdir'] = 'C:\\'
    options['mustexist'] = False
    options['parent'] = root
    options['title'] = 'This is a title'

  def askopenfile(self):

    """Returns an opened file in read mode."""

    return tkFileDialog.askopenfile(mode='r', **self.file_opt)

  def askopenfilename(self):

    """Returns an opened file in read mode.
    This time the dialog just returns a filename and the file is opened by your own code.
    """

    # get filename
    filename = tkFileDialog.askopenfilename(**self.file_opt)

    # open file on your own
    if filename:
      return open(filename, 'r')

  def asksaveasfile(self):

    """Returns an opened file in write mode."""

    return tkFileDialog.asksaveasfile(mode='w', **self.file_opt)

  def asksaveasfilename(self):

    """Returns an opened file in write mode.
    This time the dialog just returns a filename and the file is opened by your own code.
    """

    # get filename
    filename = tkFileDialog.asksaveasfilename(**self.file_opt)

    # open file on your own
    if filename:
      return open(filename, 'w')

  def askdirectory(self):

    """Returns a selected directoryname."""

    return tkFileDialog.askdirectory(**self.dir_opt)

if __name__=='__main__':
  root = Tkinter.Tk()
  TkFileDialogExample(root).pack()
  root.mainloop()

Citeste tot ce acolo, apoi incearca sa implementezi in aplicatia ta ceea ce ai nevoie. Daca nu reusesti, posteaza aici erorile primite si te ajut :)

 

In fine, mi-e lene sa te ajut mai tarziu. Uite aici ceva rapid:

  

from Tkinter import *
import tkFileDialog

def askdirectory():
  dirname = tkFileDialog.askdirectory()
  if dirname:
    var.set(dirname)

def UserFileInput(status,name):
  optionFrame = Frame(root)
  optionLabel = Label(optionFrame)
  optionLabel["text"] = name
  optionLabel.pack(side=LEFT)
  text = status
  var = StringVar(root)
  var.set(text)
  w = Entry(optionFrame, textvariable= var)
  w.pack(side = LEFT)
  optionFrame.pack()
  return w, var

def Print_entry():
  print var.get()

if __name__ == '__main__':
  root = Tk()

  dirBut = Button(root, text='askdirectory', command = askdirectory)
  dirBut.pack(side = RIGHT)
  getBut = Button(root, text='print entry text', command = Print_entry)
  getBut.pack(side = BOTTOM)

  w, var = UserFileInput("", "Directory")

  root.mainloop()

@fallen_angel tie iti sta in gat daca inveti ? :))

Edited by MrGrj
  • Upvote 1
kidd Newbie

kidd

Posted
  • Author
Posted (edited)

Multumesc! Am vazut dupa editul. Am facut deci un GUI general cu butonul de working directory si scriptul propriu zis: 

import Tkinter, tkFileDialog, Tkconstants 
from Tkinter import *
root = Tk() 
root.title('My NDVI GUI')
root.geometry('500x100') # Size 500, 200

dirtext='Step 1: Select your working directory!'

#Asking directory button
def openDirectory():
    dirname = tkFileDialog.askdirectory(parent=root, initialdir='/home/', title=dirtext) 
    dirbut["text"] = str(dirname) if dirname else dirtext
    
#Options for button
button_opt = {'fill': Tkconstants.BOTH, 'padx': 5, 'pady': 5}
#Define asking directory button
dirbut= Button(root, text = dirtext, bg = 'yellow', fg = 'black', command= openDirectory)
dirbut.pack(**button_opt) 
    
#Run NDVI
def callback():
    execfile("example5.py")
b=Button(root, text="Step 2: Click for NDVI", command=callback, bg="green")
b.pack()

root.mainloop()

 Acum ar fi perfect daca as putea face ca working dir din script sa nu fie definit si sa-mi citeasca directorul ales cu tkfiledialog.askdirectory din GUI. :)  

 

Edited by kidd

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