png - 如何使用 gnuplot 创建超过 72dpi 的 PNG 图像？

Question

我想在 gnuplot 中创建一个 PNG 图像并在 MS-Word 中使用它。但是，如果我使用

set terminal pngcairo enhanced font "Times New Roman,12.0" size 15cm,11cm  

质量很差。我读到 GNUPLOT 仅使用 72dpi。有没有办法增加这个数字？

Answer 1

只需以像素而不是厘米为单位指定所需的分辨率:

set terminal pngcairo enhanced font "Times New Roman,12.0" size 1500,1100

将生成一个 1500 像素宽和 1100 像素高的图像。另见 help pngcairo:

The default size for the output is 640 x 480 pixels. The size option changes this to whatever the user requests. By default the X and Y sizes are taken to be in pixels, but other units are possible (currently cm and inch). A size given in centimeters or inches will be converted into pixels assuming a resolution of 72 dpi.