octave读取paraview导出的.csv数据失败

paraview导出数据，再使用octave进行处理，一直报错：

octave: X11 DISPLAY environment variable not set
octave: disabling GUI features
error: load: failed to read matrix from file 'uz_030.csv'
error: called from
    postproc-wake_velocity.m at line 8 column 5

先看一下octave的代码，好像问题不大

% postproc-MATLAB.m: just post-processing

clear;
clc;
close all;

% read data from simulation
par1=load('-ascii','uz_030.csv');
par2=load('-ascii','uz_100.csv');

D=300/1000;           %%%%管道直径

D1=0.01588;
D2=1.0 * D1;          %%%%注意修改
Dn=D1/2 + D2/2;

rhoS1=7800;
rhoS2=1.0 * rhoS1;    %%%%注意修改
rhoS=rhoS1*(D1*D1*D1/(D1*D1*D1+D2*D2*D2))+rhoS2*(D2*D2*D2/(D1*D1*D1+D2*D2*D2));
rhoF=1260;
gravity=9.81;
uc=((rhoS/rhoF-1)*gravity*Dn)^0.5;
tc=Dn/uc;

x=par1(:,4);
uz_030=par1(:,3);
uz_100=par2(:,3);

x_star=x/Dn;
uz_030_star=uz_030/uc;
uz_100_star=uz_100/uc;

M=[x_star uz_030_star uz_100_star];

[m,n]=size(M);

fid = fopen('wake_velocity.txt','w');

for i=1:1:m
    for j=1:1:n
        fprintf(fid,'%g ',M(i,j));
    end
    fprintf(fid,'\n');
end

fclose(fid);

在看一下paraview导出的“.csv”数据的内容：

 注意上面第一行里面，都带有了冒号“：”，将冒号删掉之后，octave运行正常。

因此在使用octave或者MATLAB对数据进行处理是，最好提前删掉数据文件中的符号，或者直接删除当前数据所在的行，比如：

,   :   -  /