Thank you it worked using the code you gave!!! On Tue, Jun 22, 2021 at 9:33 PM <python-list-requ...@python.org> wrote:
> Send Python-list mailing list submissions to > python-list@python.org > > To subscribe or unsubscribe via the World Wide Web, visit > https://mail.python.org/mailman/listinfo/python-list > or, via email, send a message with subject or body 'help' to > python-list-requ...@python.org > > You can reach the person managing the list at > python-list-ow...@python.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Python-list digest..." > Today's Topics: > > 1. Re: PYTHON (Peter Pearson) > 2. Re: create an empty RGB image with specified number of cells > (rows, columns) (Dan Stromberg) > 3. Re: Subpixel positioning on Tk canvas (Christian Gollwitzer) > 4. IDLE is not working after Python installation . (Ayaana Soni) > 5. Re: create an empty RGB image with specified number of cells > (rows, columns) (Arak Rachael) > 6. Re: create an empty RGB image with specified number of cells > (rows, columns) (Arak Rachael) > 7. Re: IDLE is not working after Python installation . (Terry Reedy) > 8. Re: IDLE is not working after Python installation . > (Mats Wichmann) > > > > ---------- Forwarded message ---------- > From: Peter Pearson <pkpearson@nowhere.invalid> > To: python-list@python.org > Cc: > Bcc: > Date: 21 Jun 2021 14:27:05 GMT > Subject: Re: PYTHON > On Mon, 21 Jun 2021 10:33:26 +0530, Ayaana Soni <ayaanas...@gmail.com> > wrote: > > have installed python from your site. After installation my IDLE doesn't > > work. IDLE is not in my search list. Plz help!! > > "Your site" is ambiguous. > > Does your computer run Windows, Linux, Apple something, ... ? > > -- > To email me, substitute nowhere->runbox, invalid->com. > > > > > ---------- Forwarded message ---------- > From: Dan Stromberg <drsali...@gmail.com> > To: Arak Rachael <arakelthedra...@gmail.com> > Cc: Python List <python-list@python.org> > Bcc: > Date: Mon, 21 Jun 2021 12:19:45 -0700 > Subject: Re: create an empty RGB image with specified number of cells > (rows, columns) > I don't know about OpenCV, but here's a way of creating a ppm image file of > arbitrary size and arbitrary solid color: > https://stromberg.dnsalias.org/svn/solid/trunk > > On Mon, Jun 21, 2021 at 4:01 AM Arak Rachael <arakelthedra...@gmail.com> > wrote: > > > Hi guys! > > > > Does anyone know how to do this, if possible with OpenCv? > > -- > > https://mail.python.org/mailman/listinfo/python-list > > > > > > > ---------- Forwarded message ---------- > From: Christian Gollwitzer <aurio...@gmx.de> > To: python-list@python.org > Cc: > Bcc: > Date: Mon, 21 Jun 2021 23:37:42 +0200 > Subject: Re: Subpixel positioning on Tk canvas > Am 20.06.21 um 01:49 schrieb Terry Reedy: > > On 6/19/2021 12:42 AM, Christian Gollwitzer wrote: > >> Sorry for that answer, but Tkinter does not support many of the most > >> useful extensions for Tcl/Tk, because someone has to write the > >> wrappers. It only supports what is provided by base Tk. Among those I > >> consider useful and use in almost any application are: > > > > Are these extensions included with the tcl/tk distribution, or otherwise > > available from active state? Are this extensions included with Linux > > installations of tcl/tk? Or easily installed? > > Since ActiveState has pulled out the developers of Tcl a few years ago, > I haven't used ActiveTcl anymore. I was surprised to see that they > actually offer a fairly recent version, but it also cannot be simply > downloaded, one has to register. It was unclear to me if it costs money. > > Other people have stepped in to provide Tcl distributions where tese > extensions are included; notable exanples are BAWT by Paul Obermeier > http://www.bawt.tcl3d.org/download.html which offers all of the > mentioned packages (and many more), Androwish/Undroidwish by Christian > Werner which was originally developed for Android, but now works on te > major desktop platforms, http://androwish.org/home/wiki?name=undroidwish > and even kbskit can be mentioned, started by Rene Zaumseil and now > updated in irregular intervals by me https://github.com/auriocus/kbskit > > I haven't checked the major linux distros, but they also might ship with > some of these extensions. > > Concerning installation, it differs. Tablelist (also part of tklib) and > pdf4tcl are pure-Tcl packages and therefore easily installed. > TkDnD, TkTable and tkTreeCtrl are compiled extensions and therefore more > difficult - however, due to the stubs mechanism of Tcl, the version > number of Tcl and C compiler do NOT need to match. Typically a binary > downloaded for the right OS and bitness will work, and compilation from > source works with an autoconf-based configure script. > > Due to ActiveState's failure with the teapot, the Tcl world does now not > any longer have a central repository tool like "pip" which works for > everyone. This has just recently been discussed on comp.lang.tcl, but it > is unlikely to happen in the near future. > > It is of course unrealistic to expect that Tkinter supports every odd Tk > extension fron the Tcl world, which might not even be maintained any > longer. OTOH there are extensions that are well-maintained, that could > as well be part of the core Tk, but aren't for political reasons. If > Tkinter continues to be the shipped "first choice" GUI for Python, then > a few could be included - or otherwise Tkinter will lack Drag'n'drop for > ever and a reasonable Tree widget (the core one is verrrry basic). > > Best regards, > > Christian > > > > > > > ---------- Forwarded message ---------- > From: Ayaana Soni <ayaanas...@gmail.com> > To: python-list@python.org > Cc: > Bcc: > Date: Tue, 22 Jun 2021 10:44:04 +0530 > Subject: IDLE is not working after Python installation . > I have installed python from your site. After installation my IDLE doesn't > work. IDLE is not in my search list. Plz help!! > > > > > Thank you! > > > > > ---------- Forwarded message ---------- > From: Arak Rachael <arakelthedra...@gmail.com> > To: python-list@python.org > Cc: > Bcc: > Date: Tue, 22 Jun 2021 03:36:45 -0700 (PDT) > Subject: Re: create an empty RGB image with specified number of cells > (rows, columns) > On Monday, 21 June 2021 at 21:20:18 UTC+2, Dan Stromberg wrote: > > I don't know about OpenCV, but here's a way of creating a ppm image file > of > > arbitrary size and arbitrary solid color: > > https://stromberg.dnsalias.org/svn/solid/trunk > > > > On Mon, Jun 21, 2021 at 4:01 AM Arak Rachael <arakelt...@gmail.com> > > wrote: > > > Hi guys! > > > > > > Does anyone know how to do this, if possible with OpenCv? > > > -- > > > https://mail.python.org/mailman/listinfo/python-list > > > > Thanks for the help! I am new to Python, one company gave me a 2 month > test period to see if I can, but its really hard. > > This is the assignment: > [code] > TopGIS Dataset Visualization > > In this assignment, you will work with satellite images downloaded along a > GPS route from TopGIS service. You can download the dataset here: > http://download.mykkro.cz/valeo/route.zip . > > 1. Create a new Python module (package) named topgis-viz. This module will > have this basic directory structure: > > topgis-viz/ > config/ # this will contain your YAML configuration files (if any > is necessary) > config.yaml # a default configuration file > data/ # unpack the dataset into this directory (so it contains a > subdirectory named topgis with images) > target/ # this folder will contain all of your outputs > topgisviz/ # this folder will contain the module code > __init__.py > # all the other stuff > setup.py # the setup script for the package > requirements.txt > README.md # a documentation page, with a short description of the > module and usage instructions > topgis-test.py > .gitignore # don't forget to .gitignore data/ and target/ folders > > You will use the module by calling it from command line as follows: > > python topgis-test.py [--config=config/config.yaml] > > The --config parameter is optional, if not used, the default value > config/config.yaml will be used. Use argparse library to read the command > line arguments, like this: > > import argparse > > parser = argparse.ArgumentParser() > parser.add_argument( > "-c", > "--config", > help="Path to the config file." > ) > > args = parser.parse_args() > config = args.config > > When run, this script will read the configuration file in YAML format > (read about YAML here: https://yaml.org/) into a Python dictionary. You > can use this code: > > def load_yaml(yaml_path): > with open(yaml_path, "r", encoding="utf-8") as infile: > return yaml.load(infile, Loader=yaml.FullLoader) > > The configuration file will look similarly to this: > > # configuration file for topgis-viz > > # glob pattern for finding the source files > sources: "data/topgis/utm_*.jpg" > output_dir: "target/mosaic/" > mosaic: > columns: 5 > rows: 2 > cell_width: 250 > cell_height: 250 > pipeline: > - "A0 = src" > - "A1 = greyscale A0" > - "A2 = red A0" > - "A3 = green A0" > - "A4 = blue A0" > - "B0 = equalized A0" > - "B1 = equalized_greyscale A1" > - "B2 = equalized A2" > - "B3 = equalized A3" > - "B4 = equalized A4" > > These parameters govern what the script will do with the images. The > script will: > > get a list of available images (based on sources parameter, via > glob.glob function) and sort it alphabetically in increasing order > iterate over the list of images and for each of those source images: > create an empty RGB image with specified number of cells (rows, > columns) > the cells of the grid are denoted by letter-number code indicating > column and row. E.g. A0 is top-left cell. > run a processing pipeline on the source image. The pipeline is > defined by a list of strings, which are evaluated in sequence. The format > of each string is as follows: CELL = FUNCTION [ARGS]. E.g. string B0 = > equalized A0 means that cell B0 of the grid will be filled with an image > that comes as result of calling image function equalized on an image in > cell A0. > the original size of the images is 1000x1000 pixels. Do the > pipeline operations on images with this original size. Resize the images > (to cell_width * cell_height) only when putting them into the big mosaic > image. > the result of the pipeline will be stored in the specified output > directory as a JPG image (Use this naming pattern: f"{index:05}.jpg"). > > The following pipeline functions should be supported: > > src - just the source image > greyscale RGB_IMAGE - returns a greyscale image constructed from > RGB_IMAGE > red RGB_IMAGE - returns a color image that contains only red channel > green RGB_IMAGE - returns a color image that contains only green > channel > blue RGB_IMAGE - returns a color image that contains only blue channel > equalized RGB_IMAGE - returns a color image with equalized intensities > equalized_greyscale BW_IMAGE - returns a greyscale image with > equalized intensities > > Most of the functions should be easy to implement. For equalization of > colored images, use this function: > > def equalize_histogram_rgb(rgb_img): > # convert from RGB color-space to YCrCb > ycrcb_img = cv2.cvtColor(rgb_img, cv2.COLOR_BGR2YCrCb) > > # equalize the histogram of the Y channel > ycrcb_img[:, :, 0] = cv2.equalizeHist(ycrcb_img[:, :, 0]) > > # convert back to RGB color-space from YCrCb > equalized_img = cv2.cvtColor(ycrcb_img, cv2.COLOR_YCrCb2BGR) > > return equalized_img > > The cv2.equalizeHist function can be used for equalization of black and > white images. > > Running this script should result with the target/mosaic directory > populated with 624 of JPEG images named 00000.jpg to 00623.jpg. Each of > these images should be 1250 pixels wide and 500 pixels high and contain a > mosaic of images, first row containing original, greyscale, red, green and > blue images and the second row should contain the equalized versions of > these images. > [code] > > This is my code so far: > https://www.dropbox.com/s/qos0gztp4g936tk/topgis-test.py?dl=0 > > > > > ---------- Forwarded message ---------- > From: Arak Rachael <arakelthedra...@gmail.com> > To: python-list@python.org > Cc: > Bcc: > Date: Tue, 22 Jun 2021 03:38:32 -0700 (PDT) > Subject: Re: create an empty RGB image with specified number of cells > (rows, columns) > Thanks for the help! I am new to Python, one company gave me a 2 month > test period to see if I can, but its really hard. > > This is the assignment: > [code] > TopGIS Dataset Visualization > > In this assignment, you will work with satellite images downloaded along a > GPS route from TopGIS service. You can download the dataset here: link > removed do to NDA. > > 1. Create a new Python module (package) named topgis-viz. This module will > have this basic directory structure: > > topgis-viz/ > config/ # this will contain your YAML configuration files (if any is > necessary) > config.yaml # a default configuration file > data/ # unpack the dataset into this directory (so it contains a > subdirectory named topgis with images) > target/ # this folder will contain all of your outputs > topgisviz/ # this folder will contain the module code > __init__.py > # all the other stuff > setup.py # the setup script for the package > requirements.txt > README.md # a documentation page, with a short description of the module > and usage instructions > topgis-test.py > .gitignore # don't forget to .gitignore data/ and target/ folders > > You will use the module by calling it from command line as follows: > > python topgis-test.py [--config=config/config.yaml] > > The --config parameter is optional, if not used, the default value > config/config.yaml will be used. Use argparse library to read the command > line arguments, like this: > > import argparse > > parser = argparse.ArgumentParser() > parser.add_argument( > "-c", > "--config", > help="Path to the config file." > ) > > args = parser.parse_args() > config = args.config > > When run, this script will read the configuration file in YAML format > (read about YAML here: https://yaml.org/) into a Python dictionary. You > can use this code: > > def load_yaml(yaml_path): > with open(yaml_path, "r", encoding="utf-8") as infile: > return yaml.load(infile, Loader=yaml.FullLoader) > > The configuration file will look similarly to this: > > # configuration file for topgis-viz > > # glob pattern for finding the source files > sources: "data/topgis/utm_*.jpg" > output_dir: "target/mosaic/" > mosaic: > columns: 5 > rows: 2 > cell_width: 250 > cell_height: 250 > pipeline: > - "A0 = src" > - "A1 = greyscale A0" > - "A2 = red A0" > - "A3 = green A0" > - "A4 = blue A0" > - "B0 = equalized A0" > - "B1 = equalized_greyscale A1" > - "B2 = equalized A2" > - "B3 = equalized A3" > - "B4 = equalized A4" > > These parameters govern what the script will do with the images. The > script will: > > get a list of available images (based on sources parameter, via glob.glob > function) and sort it alphabetically in increasing order > iterate over the list of images and for each of those source images: > create an empty RGB image with specified number of cells (rows, columns) > the cells of the grid are denoted by letter-number code indicating column > and row. E.g. A0 is top-left cell. > run a processing pipeline on the source image. The pipeline is defined by > a list of strings, which are evaluated in sequence. The format of each > string is as follows: CELL = FUNCTION [ARGS]. E.g. string B0 = equalized A0 > means that cell B0 of the grid will be filled with an image that comes as > result of calling image function equalized on an image in cell A0. > the original size of the images is 1000x1000 pixels. Do the pipeline > operations on images with this original size. Resize the images (to > cell_width * cell_height) only when putting them into the big mosaic image. > the result of the pipeline will be stored in the specified output > directory as a JPG image (Use this naming pattern: f"{index:05}.jpg"). > > The following pipeline functions should be supported: > > src - just the source image > greyscale RGB_IMAGE - returns a greyscale image constructed from RGB_IMAGE > red RGB_IMAGE - returns a color image that contains only red channel > green RGB_IMAGE - returns a color image that contains only green channel > blue RGB_IMAGE - returns a color image that contains only blue channel > equalized RGB_IMAGE - returns a color image with equalized intensities > equalized_greyscale BW_IMAGE - returns a greyscale image with equalized > intensities > > Most of the functions should be easy to implement. For equalization of > colored images, use this function: > > def equalize_histogram_rgb(rgb_img): > # convert from RGB color-space to YCrCb > ycrcb_img = cv2.cvtColor(rgb_img, cv2.COLOR_BGR2YCrCb) > > # equalize the histogram of the Y channel > ycrcb_img[:, :, 0] = cv2.equalizeHist(ycrcb_img[:, :, 0]) > > # convert back to RGB color-space from YCrCb > equalized_img = cv2.cvtColor(ycrcb_img, cv2.COLOR_YCrCb2BGR) > > return equalized_img > > The cv2.equalizeHist function can be used for equalization of black and > white images. > > Running this script should result with the target/mosaic directory > populated with 624 of JPEG images named 00000.jpg to 00623.jpg. Each of > these images should be 1250 pixels wide and 500 pixels high and contain a > mosaic of images, first row containing original, greyscale, red, green and > blue images and the second row should contain the equalized versions of > these images. > [code] > > This is my code so far: > https://www.dropbox.com/s/qos0gztp4g936tk/topgis-test.py?dl=0 > > > > > ---------- Forwarded message ---------- > From: Terry Reedy <tjre...@udel.edu> > To: python-list@python.org > Cc: > Bcc: > Date: Tue, 22 Jun 2021 07:48:38 -0400 > Subject: Re: IDLE is not working after Python installation . > On 6/22/2021 1:14 AM, Ayaana Soni wrote: > > I have installed python from your site. > > For what OS. > > > After installation my IDLE doesn't work. > > How did you try to start it? Did you read the Using Python doc on the > website? Can you start python? > > > IDLE is not in my search list. > > On Windows and macOS, IDLE is usually started from an installed icon. > > -- > Terry Jan Reedy > > > > > > ---------- Forwarded message ---------- > From: Mats Wichmann <m...@wichmann.us> > To: python-list@python.org > Cc: > Bcc: > Date: Tue, 22 Jun 2021 08:35:44 -0600 > Subject: Re: IDLE is not working after Python installation . > > On 6/21/21 11:14 PM, Ayaana Soni wrote: > > I have installed python from your site. After installation my IDLE > doesn't > > work. IDLE is not in my search list. Plz help!! > > > > > > > > > > Thank you! > > > > you asked this before, and didn't answer the questions you got in reply. > > What does "doesn't work" mean? How is the problem manifested? Doesn't > IDLE selected from the start menu come up? Normally the installation > creates a shortcut there that "does the right thing". On Windows you > don't normally start IDLE by typing a command name. You *can* bring it > up from a command-line if you type > > py -m idlelib > > but this is definitely not the most common way to launch. > > If you haven't read it, look at > > https://docs.python.org/3/using/windows.html > > > among other things, the Microsoft Store version of Python is sometimes a > little easier to get started with (it's the same programs, just packaged > differently) > > -- > https://mail.python.org/mailman/listinfo/python-list > -- https://mail.python.org/mailman/listinfo/python-list
