将 Matplotlib 图另存为 TIFF

问题描述

有人知道如何将Matplotlib图形保存为* .tiff吗?似乎Python不支持这种格式，而期刊却经常要求使用这种格式.

Does anyone know how to save a Matplotlib figure as *.tiff? It seems that this format is not supported in Python, while the journals are quite often ask for that format.

我要添加一些最少的代码:

I am adding some minimal code:

# -*- coding: utf-8 -*-

from mpl_toolkits.mplot3d import Axes3D
import matplotlib.pyplot as plt
import numpy as np

# fig setup
fig = plt.figure(figsize=(5,5), dpi=300)
ax = fig.gca(projection='3d')
ax.set_xlim([-1,1])
ax.set_ylim([-1,1])
ax.set_zlim([-1,1])
ax.axes.xaxis.set_ticklabels([])
ax.axes.yaxis.set_ticklabels([])
ax.axes.zaxis.set_ticklabels([])

# draw a surface
xx, yy = np.meshgrid(range(-1,2), range(-1,2))
zz = np.zeros(shape=(3,3))
ax.plot_surface(xx, yy, zz, color='#c8c8c8', alpha=0.3)
ax.plot_surface(xx, zz, yy, color='#b6b6ff', alpha=0.2)

# draw a point
ax.scatter([0],[0],[0], color='b', s=200)

这有效:

fig.savefig('3dPlot.pdf')

但这不是:

fig.savefig('3dPlot.tif')

推荐答案

这太棒了！感谢 Martin Evans.但是，对于那些想在 Python3.x 中实现它的人，进行了一些小修正(因为 cStringIO 模块不可用；我宁愿使用 BytesIO )

This is great! Thanks ot Martin Evans.However, for those who would like to make it happen in Python3.x, small fixes (since cStringIO module is not available; and I would rather use BytesIO)

# -*- coding: utf-8 -*-

from mpl_toolkits.mplot3d import Axes3D
import matplotlib.pyplot as plt
import numpy as np

from PIL import Image
from io import BytesIO

# fig setup
fig = plt.figure(figsize=(5,5), dpi=300)
ax = fig.gca(projection='3d')
ax.set_xlim([-1,1])
ax.set_ylim([-1,1])
ax.set_zlim([-1,1])
ax.axes.xaxis.set_ticklabels([])
ax.axes.yaxis.set_ticklabels([])
ax.axes.zaxis.set_ticklabels([])

# draw a point
ax.scatter([0],[0],[0], color='b', s=200)

# save figure
# (1) save the image in memory in PNG format
png1 = BytesIO()
fig.savefig(png1, format='png')

# (2) load this image into PIL
png2 = Image.open(png1)

# (3) save as TIFF
png2.save('3dPlot.tiff')
png1.close()

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