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Showing content from http://libvips.github.io/libvips/API/current/method.Image.csvsave.html below:

Vips.Image.csvsave

int
vips_csvsave (
  VipsImage* in,
  const char* filename,
  ...
)

Writes the pixels in in to the filename as CSV (comma-separated values).

The image is written one line of text per scanline. Complex numbers are written as “(real,imaginary)” and will need extra parsing I guess. Only the first band is written.

separator gives the string to use to separate numbers in the output. The default is “\t” (tab).

Optional arguments

• separator: gchararray, separator string

This method is not directly available to language bindings.

filename

Type: const char*

File to write to.

The data is owned by the caller of the method. The value is a NUL terminated UTF-8 string.

...

Type: 

NULL-terminated list of optional named arguments.

Type: int

0 on success, -1 on error.

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