小编Mat*_*ias的帖子

我需要将3个numpy数组写入txt文件.该文件的头部看起来像这样:

#Filexy
#time  operation1 operation2

numpy数组如下所示:

time = np.array([0,60,120,180,...])
operation1 = np.array([12,23,68,26,...)]
operation2 = np.array([100,123,203,301,...)]

最后,.txt文件应该如下所示(分隔符应该是一个选项卡):

#Filexy
#time  operation1 operation2
0   12   100
60  23    123
120  68   203
180  26   301
..  ...   ...

我尝试了"numpy.savetxt" - 但我没有得到我想要的格式.

非常感谢您的帮助!

我使用图形大小（不应更改）绘制了以下图：

plt.figure(figsize=(14, 5))

不幸的是，x 标签并不完全可见。我的问题：是否有可能将整个图形移到顶部（因为有足够的空间）？

编码：

plt.figure(figsize=(14, 5))
plt.plot(time_load,load, linewidth=1.5)
plt.grid(True)
plt.tick_params(labelsize=16)
plt.xlabel('Time [hours]',fontsize=16)
plt.xlim([0,24])
plt.xticks([0,4,8,12,16,20,24])
plt.legend(loc="upper left",fontsize = 'large')

非常感谢您的帮助！

I am new into Modelica/Dymola-modeling. I started to model fluid models for my master-thesis (pipes, heaters, control). My professor suggested: Check the eigenvalues of the systems and the ratio of them (and if the systems is stiff). So did the following:

• Linear analysis
• Full linear analysis
• SimulationSetup: linearizeAtInitial = false; t_linearize = 1000 (that the system is in operation mode (after initialization)

The simulation restuls are Ok.

But the linear analysis says: The system is not stable --> what does …