And sorry, secondly, how could i write the values of the maximum penetration for each image into a file so that i could later draw graphs from them? [where the value for maximum penetration is given by 'meani'.in the above code] Thank yoooouu!!
How to save an image with plotted lines and annotations
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Hi, i am doing a batch processing task and for each image i will get a thresholded image with lines plotted ontop showing the initial point of spray and final point of spray and a value for the length of spray. However, i am needing to save all of this to one file like the image below. My matlab knowledge is depressingly basic. I was trying to use the imwrite function below as this will allow me to put all the processed images in the same folder, however, i do not know how to add the plotted lines and annotations to the thresholded image.Does anyone know how to do this? Thank you in advance!
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/159050/image.png)
% plot thresholded image
imagesc(BWpen);axis image; hold on;
% plot max penetration onto BWpen
plot(result(:,1),result(:,2),'r-.')
[And the line for nozzle exit]
% annotate with length of penetration
text(InjectorX-60,InjectorY-30,...
sprintf('%1.3f',meani)],'color','b','FontSize',14,'FontWeight','bold');
% attempt to write into folder
imwrite([BWpen], ['cropped\' filelist(k).name]);
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Image Analyst
2014-3-19
export_fig() (the most downloaded MATLAB app of all time) is probably the most common way. See the FAQ: http://matlab.wikia.com/wiki/FAQ#How_do_I_save_my_figure.2C_axes.2C_or_image.3F_I.27m_having_trouble_with_the_built_in_MATLAB_functions.
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Image Analyst
2014-4-8
I don't know. I've just used it for capturing screenshots of the entire figure, not of just one axes on the figure. I'd try to contact Oliver Woodford, who wrote export_fig. Worst case, read it in, crop it (hopefully it's the same size every time) and re-save it.
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