Commit edccdfe157b8cdd74de9028777231dac30cbefe0
Update readme
Charles Lehner committed on 2/10/2015, 5:48:52 PMParent: 378c8b78a1a63307a4f41c22709ff8a0ac8026a3
Files changed
| README.md | changed |
| README.md | ||
|---|---|---|
| @@ -2,25 +2,26 @@ | ||
| 2 | 2 … | ### [Sparklines](https://github.com/holman/spark) as PNGs |
| 3 | 3 … | |
| 4 | 4 … |  |
| 5 | 5 … | |
| 6 … | +Uses [LuPng](https://github.com/jansol/LuPng). | |
| 7 … | + | |
| 6 | 8 … | ## Install |
| 7 | 9 … | ``` |
| 8 | 10 … | make |
| 9 | 11 … | [sudo] make install [PREFIX=/usr/local] |
| 10 | 12 … | ``` |
| 11 | 13 … | |
| 12 | 14 … | ## Usage |
| 13 | 15 … | ``` |
| 14 | -pngspark [-h height] [-c color] [-s scaling] output.png | |
| 16 … | +echo 1 2 3 ... | pngspark [-h height] [-c color] [-s scaling] output.png | |
| 15 | 17 … | ``` |
| 16 | -Pipe numbers to pngspark to add them to the image. | |
| 17 | 18 … | |
| 18 | 19 … | ### Options |
| 19 | 20 … | * `-h height`: the height of the image in pixels |
| 20 | 21 … | * `-c color`: the color of the foreground, as #rrggbb hex |
| 21 | -* `-s scaling`: scaling factor. 0 to do no scaling, 1 to make the minimum | |
| 22 | - value be at the bottom of the image | |
| 22 … | +* `-s scaling`: scaling factor. 0 to keep things proportional, 1 to make the | |
| 23 … | + minimum value be at the bottom of the image | |
| 23 | 24 … | |
| 24 | 25 … | ## Examples |
| 25 | 26 … | |
| 26 | 27 … | Display BTC ticker data |
| @@ -36,20 +37,22 @@ | ||
| 36 | 37 … |  |
| 37 | 38 … | |
| 38 | 39 … | ## API |
| 39 | 40 … | |
| 41 … | +Generate pngsparks in your own C programs! | |
| 42 … | + | |
| 40 | 43 … | ```c |
| 41 | 44 … | struct pngspark; |
| 42 | 45 … | ``` |
| 43 | 46 … | A png spark instance: collection of values and settings. |
| 44 | 47 … | |
| 45 | 48 … | ```c |
| 46 | 49 … | int pngspark_init(struct pngspark *ps, size_t height, const char *color, double scaling); |
| 47 | 50 … | ``` |
| 48 | -Initialize a pngspark struct. | |
| 51 … | +Initialize a pngspark struct. Arguments are as in the command-line options. | |
| 49 | 52 … | |
| 50 | 53 … | ```c |
| 51 | -int pngspark_append(struct pngspark *ps, double, value); | |
| 54 … | +int pngspark_append(struct pngspark *ps, double value); | |
| 52 | 55 … | ``` |
| 53 | 56 … | Append a value to the pngspark. |
| 54 | 57 … | |
| 55 | 58 … | ```c |
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