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README.md

README.md

Colour picker and data extractor from colour bar, colour map and heatmap plots

Description:

  • MATLAB tool.

  • Colour picker and data extractor from colour bar, colour map and heatmap plots.

  • I have used this tool to extract data from figures of scientific papers.

  • It can be used as a tool to (preliminary) estimate and evaluate data during systematic reviews and meta-analysis.

Demonstration:

alt text

Documentation:

  • myDemo01.m

    -Main routine. Use this file to configure and run your experiment.

    -variable "myTargetImage": path to the image that you want to explore and pick values using the mouse.

    -variable "myColorBarImage": path to the image that you want to use as reference colour bar. Linear scale.

    -variable "myColorBarImageLowValue": scalar value representing the lower value of the reference linear colour bar.

    -variable "myColorBarImageHighvalue": scalar value representing the higher value of the reference linear colour bar.

  • mouseMove.m

    -Routine that is executed every time you mouve the mousse over the target image.

    -You can use the custom "myKnnSearch.m", native "knnsearch.m" or other multi-dimensional search criteria.

  • myKnnSearch.m

    -Routine that is executed to search the nearest colour (Euclidean distance) to the picked pixel in target image and estimate the corresponding colour bar value.

  • Color_Bar.jpg

    -Example of a colour bar.

    -Colour bar should be oriented verticaly and represent a linear scale. Lower value at the bottom. Higher value at the top.

    -Colour bar and target image should be both RGB images or grayscale images.

    -Best option to get a good version of a colour bar is to printscreen the source of that colour bar: eg: a scientific paper.

  • Sample_Target_Image.jpg

    -Example of a target image, which is going to be explored by mouse.

    -Colour bar and target image should be both RGB images or grayscale images.

    -Best option to get a good version of a target image is to printscreen the source of that target image. eg: a scientific paper.

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