How to change matplotlib image size

Matplotlib is a plotting library for Python. It works with NumPy, providing an effective open source alternative to MatLab. It can also be used with graphical toolkits such as PyQt and wxPython.

#For image size, Matplotlib provides the following methods to handle it.

matplotlib.rcParams['figure.figsize']#Picture pixels

matplotlib.rcParams['savefig.dpi']#Resolution

plt.savefig ('plot123_2.png', dpi=200)#Specify resolution

Sample code:

plt.rcParams['figure.figsize'] = (8.0, 4.0) # 设置figure_size尺寸
plt.rcParams['image.interpolation'] = 'nearest' # 设置 interpolation style
plt.rcParams['image.cmap'] = 'gray' # 设置 颜色 style
#figsize(12.5, 4) # 设置 figsize
plt.rcParams['savefig.dpi'] = 300 #图片像素
plt.rcParams['figure.dpi'] = 300 #分辨率
# 默认的像素：[6.0,4.0]，分辨率为100，图片尺寸为 600&400
# 指定dpi=200，图片尺寸为 1200*800
# 指定dpi=300，图片尺寸为 1800*1200
# 设置figsize可以在不改变分辨率情况下改变比例

The above is the detailed content of How to change matplotlib image size. For more information, please follow other related articles on the PHP Chinese website!