| .TH IM_CSV 3 "November 2000" |
| .SH NAME |
| im_csv2vips, im_vips2csv \- read and write CSV (comma separated values) files |
| .SH SYNOPSIS |
| #include <vips/vips.h> |
| |
| int im_csv2vips( const char *filename, IMAGE *out ) |
| |
| int im_vips2csv( IMAGE *in, const char *filename ) |
| |
| .SH DESCRIPTION |
| .B im_csv2vips(3) |
| reads the CSV (comma separated values) data in filename, and writes the image |
| out in VIPS format. The output image is always 1 band (monochrome), |
| IM_BANDFMT_DOUBLE. |
| |
| The reader is deliberately rather fussy: it will fail if there are any short |
| lines, or if the file is too short. It will ignore lines that are too long. |
| |
| Read options can be embedded in the filename. The options can be given in any |
| order and are: |
| |
| skip:lines-to-skip |
| |
| The number of lines to skip at the start of the file. Default zero. |
| |
| whi:whitespace-characters |
| |
| The skippable whitespace characters. Default <space> and double quotes ("). |
| Whitespace characters are always run together. |
| |
| sep:separator-characters |
| |
| The characters that separate fields. Default ;,<tab>. Separators are |
| never run together. |
| |
| line:lines-to-read |
| |
| The number of lines to read from the file. Default -1, meaning read to end of |
| file. |
| |
| .B im_vips2csv(3) |
| writes the VIPS image to the file as ascii text, one line of text per |
| scanline. Complex numbers are written as "(real,imaginary)" and will need |
| extra parsing I guess. |
| |
| Write options can be embedded in the filename. The options can be given in any |
| order and are: |
| |
| sep:separator-string |
| |
| The string to use to separate numbers in the output. The default is "\\t" (tab). |
| |
| .SH EXAMPLES |
| |
| im_csv2vips( "fred.csv:skip:58,sep:\,,line:3", out ); |
| |
| Will read three lines starting at line 59, with space, comma and tab as the |
| allowed separators. Note that the ',' has to be escaped with a backslash. |
| |
| im_vips2csv fred.jpg fred.csv:sep:\t |
| |
| Convert a jpeg to CSV, separating numbers with tab characters. |
| |
| .SH SEE ALSO |
| im_read_dmask(3), im_ppm2vips(3) |
| .SH COPYRIGHT |
| Hey, you want this? You have it! |
