I am trying to launch karma from WSL using the Windows version of Google Chrome.
In the karma.conf.js I simply use the Chrome browser:
[...],
browsers: ['Chrome'],
[...]
And I export the CHROME_BIN environment variable like this:
export CHROME_BIN='/mnt/c/Program Files (x86)/Google/Chrome/Application/chrome.exe'
Karma successfully find Google Chrome, and a new tab is opened at the right URL when Karma is launched. However, I get this error:
Google chrome can't read and write to its data directory /tmp/karma-XXXX
I tried starting chrome as administrator and changing the cache folder to the root of my project but it doesn't work.
I assumed there was a issue with the format of the path that Karma give to Chrome (WSL path vs Windows path).
So I create a custom karma launcher specifying the chromeDataDir:
browsers: ['WindowsChrome'],
customLaunchers: {
WindowsChrome: {
base: 'Chrome',
chromeDataDir: 'D:\\'
}
}
By doing that a I don't have the previous error, a new instance of Chrome is launched but Chrome seems unable to resolve the URL, and karma timeout.
Moreover, a lot of Chrome folders are created inside my project.
Have someone already make karma work from WSL using Chrome or have any cue on what is going on ?
I found that if you create a C:\tmp\karma folder under Windows, this error goes away, and Chrome finds and uses this folder for temp files.
You can also change the temporary folder that Chrome uses for its data by setting the TEMP environment variable like so:
export TEMP='/path/to/your/folder'
The important thing is that C:\path\to\your\folder must exist under Windows.
Now in january 2022, on WSL2, tested on debian 11/WSL under windows 11, it's "easy" :
From windows command prompt :
SET CHROME_EXECUTABLE=C:\Program Files\Google\Chrome\Application\chrome.exe
Test :
echo %CHROME_EXECUTABLE%
C:\Program Files\Google\Chrome\Application\chrome.exe
Share this Windows env variable with WSL (doc. https://devblogs.microsoft.com/commandline/share-environment-vars-between-wsl-and-windows/) :
set WSLENV=CHROME_EXECUTABLE/p
From Windows command prompt, enter wsl, :
wsl
Verify the env variable is ok under wsl :
echo $CHROME_EXECUTABLE
/mnt/c/Program Files/Google/Chrome/Application/chrome.exe
I just installed Sublime-jshint (and the requisite node.js + jshint) but get this error when I try to invoke JSHint from within ST2:
[Errno 2] No such file or directory
[cmd: [u'jshint', u'PATH-TO-THE-JS-FILE-I-AM-LINTING', u'--reporter', u'/home/cmg/.config/sublime-text-2/Packages/JSHint/reporter.js']]
[dir: DIR-MY-JS-FILE-IS-IN]
[path: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/home/cmg/bin]
[Finished]
The final item in the given path is in the home dir of my user (cmg), so it's been customized somehow... but I don't recall how, so I don't know how to add the dir I need (~/node_modules/.bin).
I've added it to $PATH in my shell (via both .bashrc and .bash_profile) but ST2 doesn't pick it up.
(I'm on Ubuntu 14.04. All the usable stuff I've found via Google on this subject has been either OS X specific or related to ST's build system).
Basically, the exec command, which the jshint package uses internally, allows you to set/extend the PATH of the spawned subprocess. (docs)
The package actually uses this path argument on OSX, but has it hardcoded (I am partly guilty of that as I rewrote the command because it was just horrible before). It should allow for a setting to specify the path to your jshint executable, so I suggest you create an issue for that.
I don't know why ST dosn't pick up your PATH from somewhere else since I have very little experience with that.
Open /etc/profile in Sublime (using sudo) and add the following line at the very bottom:
export PATH=/home/cmg/node_modules/.bin:$PATH
and save the file. Restart completely, and your PATH should be updated.
I have a problem with running tesseract-ocr engine on linux. I've downloaded RUS language data and put it to tessdata directory (/usr/local/share/tessdata). When I'm trying to run tesseract with command tesseract blob.jpg out -l rus , it displays an error:
Error opening data file /usr/local/share/tessdata/eng.traineddata
Please make sure the TESSDATA_PREFIX environment variable is set to the parent directory of your "tessdata" directory.
Failed loading language eng
Tesseract couldn't load any languages!
Could not initialize tesseract.
According to compiling guide, I used export TESSDATA_PREFIX='/usr/local/share/'
to point my tessdata directory.
Maybe I should edit any config files? Tesseract try to load 'eng' data files instead of 'rus'.
Screenshot:
http://i.stack.imgur.com/I0Guc.png
You can grab eng.traineddata Github:
wget https://github.com/tesseract-ocr/tessdata/raw/main/eng.traineddata
Check https://github.com/tesseract-ocr/tessdata for a full list of trained language data.
When you grab the file(s), move them to the /usr/local/share/tessdata folder. Warning: some Linux distributions (such as openSUSE and Ubuntu) may be expecting it in /usr/share/tessdata instead.
# If you got the data from Google, unzip it first!
gunzip eng.traineddata.gz
# Move the data
sudo mv -v eng.traineddata /usr/local/share/tessdata/
The simpliest way is to install the needed package:
sudo apt-get install tesseract-ocr-eng #for english
sudo apt-get install tesseract-ocr-tam #for tamil
sudo apt-get install tesseract-ocr-deu #for deutsch (German)
As you can notice, it opens the road to others languages (i.e. tesseract-ocr-fra).
I had this error too on the Windows machine.
My solution.
1) Download your language files from
https://github.com/tesseract-ocr/tessdata/tree/3.04.00
For example, for eng, I downloaded all files with eng prefix.
2) Put them into tessdata directory inside of some folder. Add this folder into System Path variables as TESSDATA_PREFIX.
Result will be
System env var: TESSDATA_PREFIX=D:/Java/OCR
And OCR folder has tessdata with languages files.
This is a screenshot of the directory:
No previous solution worked for me.
I've installed both by apt-get and manually downloading the tessdata, moved around /usr and so on and no one worked even if i exported the variable thousand times.
Finally, on a last try before start to cry i've tried to pass the path directly to the instance of Tesseract().
In Python: tr = Tesseract("/usr/local/share/tesseract-ocr/") and now it works. To clarify, im using tesserwrap module.
For Windows Users:
In Environment Variables, add a new variable in system variable with name "TESSDATA_PREFIX" and value is "C:\Program Files (x86)\Tesseract-OCR\tessdata"
tesseract --tessdata-dir <tessdata-folder> <image-path> stdout --oem 2 -l <lng>
In my case, the mistakes that I've made or attempts that wasn't a success.
I cloned the github repo and copied files from there to
/usr/local/share/tessdata/
/usr/share/tesseract-ocr/tessdata/
/usr/share/tessdata/
Used TESSDATA_PREFIX with above paths
sudo apt-get install tesseract-ocr-eng
First 2 attempts did not worked because, the files from git clone did not worked for the reasons that I do not know. I am not sure why #3 attempt worked for me.
Finally,
I downloaded the eng.traindata file using wget
Copied it to some directory
Used --tessdata-dir with directory name
Take away for me is to learn the tool well & make use of it, rather than relying on package manager installation & directories
For me the problem was in how I downloaded the train data files. Make sure you get the raw link.
Initially I was using:
wget https://github.com/tesseract-ocr/tessdata_best/blob/master/eng.traineddata
When I changed it to:
wget https://github.com/tesseract-ocr/tessdata_best/raw/master/eng.traineddata
It worked
For Ubuntu just run the below command and the Environment variable error will disappear.
command:
export TESSDATA_PREFIX=Path_of_your_tessdata_folder
Command Example:
export TESSDATA_PREFIX=/home/amar/Desktop/OCR/tesseract-4.1.1/tessdata
This command will set the tessdata folder's path to the environment variable with name TESSDATA_PREFIX and the above error will be resolved.
You can call tesseract API function from C code:
#include <tesseract/baseapi.h>
#include <tesseract/ocrclass.h>; // ETEXT_DESC
using namespace tesseract;
class TessAPI : public TessBaseAPI {
public:
void PrintRects(int len);
};
...
TessAPI *api = new TessAPI();
int res = api->Init(NULL, "rus");
api->SetAccuracyVSpeed(AVS_MOST_ACCURATE);
api->SetImage(data, w0, h0, bpp, stride);
api->SetRectangle(x0,y0,w0,h0);
char *text;
ETEXT_DESC monitor;
api->RecognizeForChopTest(&monitor);
text = api->GetUTF8Text();
printf("text: %s\n", text);
printf("m.count: %s\n", monitor.count);
printf("m.progress: %s\n", monitor.progress);
api->RecognizeForChopTest(&monitor);
text = api->GetUTF8Text();
printf("text: %s\n", text);
...
api->End();
And build this code:
g++ -g -I. -I/usr/local/include -o _test test.cpp -ltesseract_api -lfreeimageplus
(i need FreeImage for picture loading)
I'm using windows OS, I tried all solutions above and none of them work.
Finally, I install Tesseract-OCR on D drive(Where I run my python script from) instead of C drive and it works.
So, if you are using windows, run your python script in the same drive as your Tesseract-OCR.
In Google Colab I resolved the issue in this way:
!sudo apt-get install tesseract-ocr-*
Because if you use this command !sudo apt install tesseract-ocr then it imports 2 languages but when you intend to work on non-English languages then the former command works.
Afterwards, use this command !pip install pytesseract
You can also check languages in this way !tesseract --list-langs
I'm using Visual Studio 2017 Community Edition.
I solved this problem by making a directory called tessdata in the Debug directory of my project. Then I put the eng.traineddata file into said directory.
C# developer working on Windows here. What works for me is simply download the file eng.traineddata from the following URL:
https://github.com/tesseract-ocr/tessdata/blob/master/eng.traineddata
and copy it to the following directory in my Console Application project:
[Project Directory]\bin\Debug\tessdata
I did manually create the tessdata folder above.
tessdata_dir_config = r'--tessdata-dir "/usr/local/Cellar/tesseract/4.1.1/share/tessdata"'
pytesseract.image_to_string(imgCrop,lang='eng',config=tessdata_dir_config)
Add this to your code :
instance.setDatapath("C:\\somepath\\tessdata");
instance.setLanguage("eng");
How I solved the problem in my Manjaro Xfce:
Message “TesseractError: (1, 'Error opening data file /home/julio/snap/tesseract/common/eng.traineddata Please make sure the TESSDATA_PREFIX environment variable is set to your "tessdata" directory. Failed loading language 'eng' Tesseract couldn't load any languages! Could not initialize tesseract.')”
Then, in my Manjaro, I typed: sudo pacman -S tesseract
Then the system installed both the “tesseract” and also a package name “leptonica”
After this step, I thought everything was ok, and tried to run my simple script. However, the error message changed to something like this (it changed the previous “/home” location to other “/usr”-like location):
“"Please make sure the TESSDATA_PREFIX environment variable is set to your "tessdata" directory. Failed loading language 'eng' Tesseract couldn't load any languages! Could not initialize tesseract.')"”
Then I realized that there had appeared this message when I installed “tesseract” with pacman: “You must install one of tesseract-data-* packages or whole tesseract-data group”
So, I tried the command: “sudo pacman -S tesseract-data”, and the system presented lots of language options to me. So I’ve chosen some languages, installed as follows, and the module started to work like a charm:
sudo pacman -S tesseract-data-eng
sudo pacman -S tesseract-data-por
sudo pacman -S tesseract-data-fra
sudo pacman -S tesseract-data-spa
I tried some portuguese special characters (like "ão"), that only worked when I used the argument "lang='por'" in the pytesseract.image_to_string(img,lang='por')
As of 2021, My solution for Ubuntu is to download the zip files from https://github.com/tesseract-ocr/tessdata_best/releases/tag/4.1.0, extract and copy the neccessary .traineddata files into /usr/local/share/tessdata. This is the default folder for tesseract 4.1.1 to search for trained data.
I had the same problem with DEU language on macOS. I could solve it by installing all additional languages like so:
brew install tesseract-lang
as suggested on https://formulae.brew.sh/formula/tesseract
**IF you have windows OS then please add your TesseractOCR to system variable.
Eg..
Find the path where Tesseract is installed in your c drive (in my case r"C:\Program Files\Tesseract-OCR\tesseract.exe")**
2)make sure you have the required files ie tessdata, tessdata if not then download it from https://github.com/tesseract-ocr/tessdata https://github.com/tesseract-ocr/langdata (At least those languages which you want to convert)
past it into the main directory in my case C:\Program Files\Tesseract-OCR
4)Add the path of the directory to your system environment variable
for that
search environment variable in start bar
go to environment variable
click path in your system environment variable (NOT IN USER ENVIRONMENT VARIABLE)
past the path of tesseractocr
thats all...
Everytime I use watir-webdriver to initialise a chrome browser instance, it launches as a first-run with an EULA pop-up and an additional getting-started tab open.
Both of these side-effects are preventing me from automating tests for chrome.
I have tried initialising a browser using just
Selenium::WebDriver.for :chrome, :switches => %w[--no-first-run]
but have the same result.
I am surprised to be unable find any other questions online about this, so assume I have done something weird!
I have placed chromedriver.exe in C:\Program Files (x86)\Google\Chrome\Application which is on my PATH variable.
Any ideas?
I have found a solution for this. In C:\Program Files (x86)\Google\Chrome\Application there is a file called master_preferences.
Opening this file and setting:
require_eula to false
show_welcome_page to false
fixed both issues for me.
Hopefully this helps someone!
I would put the chromedriver.exe on your PATH, so somewhere like C:/windows/system32 or the like, or you could add the directory
C:\Program Files (x86)\Google\Chrome\Application
to your PATH (right click My Computer -> Advanced -> Environment Variables)
It should then run OK.