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Up: Component summary
Component
CSV2ImageCreate an image visualization from CSV file.
This component can be used to create a bitmap image of any CSV file, where a column is the X coordinate of the pixel [0-width], and another is the Y coordinate of the pixel [0-height] and the given column is interpreted as intensity. Intensities are normalized for maximal contrast or with given "iMax" and "iMin" values.
The source file can be also of LinkedList format, where each row contains a tuple of coordinates.
For multicolor images, run for each channel, and join grayscale images with other components, like MergeImage or ImageMagick.
| Version | 1.2 |
|---|---|
| Bundle | anima |
| Categories | Image Transformation |
| Authors | Ville Rantanen (ville.rantanen@helsinki.fi) |
| Issue tracker | View/Report issues |
| Requires | Python ; python-scipy (DEB) ; python-imaging (DEB) |
| Source files | component.xml CSV2Image.py |
| Usage | Example with default values |
Inputs| Name | Type | Mandatory | Description |
|---|---|---|---|
| in | CSV | Mandatory | Source data. |
| reference | ImageList | Optional | Image files that are used to autodetect the dimensions. Image names must match fCol names. |
Outputs| Name | Type | Description |
|---|---|---|
| out | ImageList | Resulting images in a folder. |
| frequency | ImageList | Frequency of data points. If each coordinate exists only once, the image is full of 1, i.e. almost black. (0-255) |
Parameters| Name | Type | Default | Description |
|---|---|---|---|
| alpha | boolean | true | Mark unused pixels with transparent pixel. |
| color | boolean | false | Create a pseudo colored image for pixel method. |
| fCol | string | "File" | Column to use the name of the file |
| height | float | 0 | Force the height of the image. Defaults to autodetect (0). |
| iMax | float | 0 | Value in the vCol column that is normalized as maximum. If iMin and Imax are equal values, contrast is streched to maximum. |
| iMin | float | 0 | Value in the vCol column that is normalized as minimum. If iMin and Imax are equal values, contrast is streched to maximum. |
| method | string | "pixel" | "pixel" method draws a single pixel with value from vCol. "linkedlist" method draws a line between pairs of xCol and yCol. NOTE xCol and yCol must be presented in format xCol="X1,X2" and two columns of data is needed / axis |
| vCol | string | "" | Column to use for intensity. If several values exist for the same coordinate, a mean is taken. If left empty, white color for the pixel is used. |
| width | float | 0 | Force the width of the image. Defaults to autodetect (0). |
| xCol | string | "X" | Column to use for X coordinate. Integers only. |
| yCol | string | "Y" | Column to use for Y coordinate. Integers only. |
Test cases| Test case | Parameters▼ | IN in |
IN reference |
OUT out |
OUT frequency |
|
|---|---|---|---|---|---|---|
| case1 | properties | in | (missing) | out | frequency | |
|
vCol=Intensity, |
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| case2 | properties | in | (missing) | out | frequency | |
|
vCol=Intensity, |
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