我們經(jīng)常會(huì)遇到如圖中的多個(gè)相似名稱的多個(gè)文件鬼佣，如何將這多個(gè)文件中的數(shù)據(jù)提取到同一個(gè)文件中驶拱，方便數(shù)據(jù)分析呢？
- matlab代碼如下：
for i=0:20; %定義需要提取的文件數(shù)目
filename=strcat('no_1m.',num2str(i),'.csv'); %用i把文件名稱相連
fid=csvread(filename,1,9,[1,9,1,9]); %定位需要提取的數(shù)據(jù)在文件中的坐標(biāo)
M=fid/1000000; %對(duì)提取的數(shù)據(jù)進(jìn)行操作
dlmwrite('without spray Uy.csv',M,'-append','precision',10); % 對(duì)提取的數(shù)據(jù)寫入一個(gè)新的文件中
end
-
關(guān)于matlab中的
csvread命令：
下面是一個(gè)csv文件中的內(nèi)容,名稱為csvlist：
02, 04, 06, 08, 10, 12
03, 06, 09, 12, 15, 18
05, 10, 15, 20, 25, 30
07, 14, 21, 28, 35, 42
11, 22, 33, 44, 55, 66
- 讀取整個(gè)數(shù)據(jù)集
m=csvread('csvlist.dat')
m =
2 4 6 8 10 12
3 6 9 12 15 18
5 10 15 20 25 30
7 14 21 28 35 42
11 22 33 44 55 66
- 從第3行晶衷，第1列開始讀
m = csvread('csvlist.dat', 2, 0)
m =
5 10 15 20 25 30
7 14 21 28 35 42
11 22 33 44 55 66
- 讀取一個(gè)區(qū)域
m = csvread('csvlist.dat', 2, 0, [2,0,3,3])
m =
5 10 15 20
MATLAB畫函數(shù)圖
%論文14拖曳系數(shù)圖蓝纲，圖1，圖2
ezplot('y1-0.16./[log(5302.7./x.^2)].^2=0',[0 4 10^-3 5*10^-3]);
hold on
ezplot('y2-((1-5.167*10^-2*x^2)*0.16./[log(5302.7./x.^2)].^2)=0',[0 4 10^-3 5*10^-3]);
grid on+
MATLAB設(shè)置圖片大小
clear;
hold on;
x1=[27.3,33.1,40.8,50.8];
y1=[0.00193,0.00197,0.00193,0.00148];
scatter(x1,y1,'k');
hold on;
x2=[27.3,33.0,40.9,50.8];
y2=[0.00196,0.00215,0.00186,0.00150];
scatter(x2,y2,'+');
hold on;
x3=[27.9,32.7,39.7,49.8];
y3=[0.00146,0.00223,0.00260,0.00189];
scatter(x3,y3,'x');
hold on;
x4=[27.6,32.5,40.3,50.1];
y4=[0.00178,0.00244,0.00216,0.00173];
scatter(x4,y4,'d');
scatter(x1,y1,'k');
hold on;
scatter(x2,y2,'+');
hold on;
scatter(x3,y3,'x');
hold on;
scatter(x4,y4,'d');
set (gcf,'Position',[100,100,320,256]);%設(shè)置輸出圖片大小
set (gcf,'Position',[100,100,500,400]);
