2024年4月11日发(作者：)

先说一下字符串，字符串在matlab中需要加单引号，你直接使用newData1=

importdata();

matlab便会将看成是变量，但是importdata需要一个包含文件名的字符串变量，

但是不知道是什么东西，所以会出现???Undefinedvariable"DOW"orclass

"".

正确的使用方法是：

newData1=importdata('');

或者

path=''

newData1=importdata(path);

不过importdata不支持后缀名为txt文件，其支持的文件后缀有：

Dataformats

MAT

CSV

DAT

DLM

-MATLABworkspace

-Commaseparatednumbers

-Formattedtext

-Delimitedtext

Command

load

csvread

Returns

Variablesinfile.

Doublearray.

Doublearray.

Doublearray.

importdataDoublearray.

dlmread

dlmreadTAB-Tabseparatedtext

Spreadsheetformats

XLS-Excelworksheet

WK1-Lotus123worksheet

xlsread

wk1read

Doublearrayandcellarray.

Doublearrayandcellarray.

Scientificdataformats

CDF

HDF

-CommonDataFormat

-HierarchicalDataFormat

cdfread

fitsread

hdfread

CellarrayofCDFrecords

HDForHDF-EOSdataset

FITS-FlexibleImageTransportSystemPrimaryorextensiontabledata

Movieformats

AVI-MovieavireadMATLABmovie.

Imageformats

TIFF-TIFFimage

image(s).

PNG

image.

HDF-HDFimageimreadTruecolororindexedimage(s).

-PNGimageimreadTruecolor,grayscaleorindexed

imreadTruecolor,grayscaleorindexed

BMP

GIF

PCX

CUR

ICO

RAS

PBM

PGM

PPM

-BMPimage

-GIFimage

-PCXimage

-Cursorimage

-Iconimage

-Sunrasterimage

-PBMimage

-PGMimage

-PPMimage

imread

imread

imread

imread

imread

imread

imread

imread

imread

imread

imread

Truecolororindexedimage.

Truecolororgrayscaleimage.

Indexedimage.

Indexedimage.

Indexedimage.

Indexedimage.

Indexedimage.

Truecolororindexed.

Grayscaleimage.

Grayscaleimage.

Truecolorimage.

JPEG-JPEGimage

XWD-XWDimage

Audioformats

AU

SND

WAV

-NeXT/Sunsound

-NeXT/Sunsound

-MicrosoftWavesound

auread

auread

wavread

Sounddataandsamplerate.

Sounddataandsamplerate.

Sounddataandsamplerate.