imv | Image viewer for X11/Wayland | Video Utils library
kandi X-RAY | imv Summary
kandi X-RAY | imv Summary
[builds.sr.ht status] imv - X11/Wayland Image Viewer.
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QUESTION
I'm trying to make a tool for my lab for manual image registration--where the user can select some points on two different images to align them. I made this in matplotlib, but zooming in/out was way too slow (I think because the images we're aligning are pretty high res). Is there a good way to do that in pyqtgraph? I just need to be able to select points on two image plots side by side and display where the point selections were.
Currently I have the images in ImageView
s and I tried doing it with imv.scene.sigMouseClicked.connect(mouse_click)
, but in mouse_click(evt)
evt.pos()
, evt.scenePos()
, and evt.screenPos()
all gave coordinates that weren't in the image's coordinates. I also played around with doing the point selection with ROI free handles (since I could get the correct coordinates from those), but it doesn't seem like you could color the handles, which isn't a total deal-breaker I was wondering if there was a better option. Is there a better way to do this?
ANSWER
Answered 2021-Nov-10 at 06:11Your question is unclear about how you want the program to match the points, here I provide a simple solution to allow you (1) Show an image. (2) Add points to the image.
The basic idea is to use a pg.GraphicsLayoutWidget
, then add a pg.ImageItem
and a pg.ScatterPlotItem
, and each mouse click adds a point to the ScatterPlotItem. Code:
QUESTION
I would like to show the data of a hdf5 file in the ImageView() class from pyqtgraph. The bare code of displaying the plot for ImageView() is:
...ANSWER
Answered 2021-Aug-21 at 19:12The error indicates that dataset 'data'
doesn't exist in your HDF5 file. So, we have to figure out why it's not there. :-) You didn't say where you found the example you are running. The one I found in the pyqtgraph/examples
repository has code to create the file in function def createFile(finalSize=2000000000):
.
I assume you ran this code to create test.hdf5
?
If you didn't create the file with the example code, where did you get test.hdf5
?
Either way, here is some code to interrogate your HDF5 file. It will give us dataset names and attributes (shape and dtype). With that info, we can determine the next steps.
QUESTION
I'm trying to receive stock data for about 1000 stocks, to speed up the process I'm using multiprocessing, unfortunately due to the large amount of stock data I'm trying to receive python as a whole just crashes.
Is there a way to use multiprocessing without python crashing, I understand it would still take some time to do all of the 1000 stocks, but all I need is to do this process as fast as possible.
...ANSWER
Answered 2021-Jan-31 at 19:18Ok, here is one way to obtain what you want in about 2min. Some tickers are bad, that's why it crashes.
Here's the code. I use joblib for threading or multiprocess since it doesn't work in my env. But, that's the spirit.
QUESTION
I'm having ValidationError: name: Path `name` is required., email: Path `email` is required., subject: Path `subject` is required., message: Path `message` is required.
when i try to send a post request. I have tested the api using Postman and is working very well. I have console.logged the state and is working perfectly, I have also gone to the backend and removed the required from the schema and i tried send a post and it sent successfully but when i checked the database, it was only the id and default date that was sent. I have tried everything i know, i don't know what else to do. Please help me.
My react component
...ANSWER
Answered 2020-Nov-02 at 18:11The headers option is misspelled. It's missing an S in the end so the content is being sent as text/plain instead of application/json.
Change:
QUESTION
I'm using Firebase to generate dynamic links backend side.
I need to generate shorted links, so I'm using this approach as suggested into the documentation:
https://firebase.google.com/docs/reference/dynamic-links/link-shortener
I noticed that, into this documentation, there isn't a parameter to specify the minimum version of the iOS app (similar like 'androidMinPackageVersionCode
').
This is strange because using the manual approach this seams possible: https://firebase.google.com/docs/dynamic-links/create-manually
imv: The version number of the minimum version of your app that can open the link. This flag is passed to your app when it is opened, and your app must decide what to do with it.
Wrong documentation?
...ANSWER
Answered 2020-Oct-22 at 07:57This is a known feature request. The only workaround for this is to add imv
in the long link manually and creating a short Firebase Dynamic Link using a long link.
QUESTION
I'm working on a PyQt5 + pyqtgraph user interface. The main idea is to have an image viewer that I can update using widgets from the Main Window, like sliders, line edits, buttons... By now I'm having trouble updating the image when I move the slicer. It connects to the expected functions, but the image on the ImageViewer keeps always the same (the first one). How can I solve this? I know that pyqtgraph ImageViewer can deal with 3D arrays, but in the future, I will have to add more than one viewer that will be updated by the same slider. This is the code I have:
This HDF5 file that I'm using is a (2048, 2048, 10) size array (10 uint16 images inside).
...ANSWER
Answered 2020-Apr-06 at 20:37You are creating a new ImageView that has not been added to the window so you do not see the change, the solution is to create the ImageView only once and then reuse it
QUESTION
The program below is used to categorise files based on their filetypes, more precisely their extension. Command used for example ./sorting -f file1.jpg file2.txt file3.c
then it would create jpg
, txt
, and c
folders and put the files inside.
Here is the code
...ANSWER
Answered 2020-Apr-03 at 05:24It isn't clear what constraints are placed on the classroom exercise, and my Indonesian is not as good as the OP's English, and Chrome didn't seem willing to translate the README.md
file on the GitHub page https://github.com/VYPRATAMA009/sisop-modul-3.
Tackling the problem as described in the question (in terms of the desired result), there is no need to use either threads or fork()
and exec*()
to implement the program.
It is almost invariably a bad idea to mix threads with fork()
and exec*()
— choose multi-threading or multi-processing but not both at once.
The program needs to process the option (-f
to check for regular files only; omit to move any file type), and then process any residual file names. The name processing consists of checking for a regular file if desired, finding the extension with strrchr()
, then creating a directory with that extension name, then formatting the name in the sub-directory, then renaming the file so it goes into the directory, and freeing the allocated memory.
QUESTION
I am learning JavaFX. I want to display some icons one by one after few seconds. My code is not working. I have written some code. and icons are stored in a separate folder called images.
...ANSWER
Answered 2020-Mar-14 at 09:00Alright, I've tried something for you. I don't know what exactly you're looking for but this code will give you some idea at least. I've made few assumptions. You've a folder under the same directory with the name images which has all your icons (to be displayed) as 1.png, 2.png, 3.png, and so on. I'm using Netbeans 8.2 which will automatically import necessary classes from the respective packages.
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