MATLAB读取txt文件数据与处理

bqgup

MATLAB读取txt文件数据与处理 [复制链接]

# MATLAB读取txt文件数据与处理 ## 一、获取txt文件原始数据 #### 利用串口接收到的数据保存为txt格式的文件，保存到PC端的文件夹下： #### E:\8、matlab\matlab读取txt文件数据 #### txt文件内容如下： <ignore_js_op> <img src="static/image/filetype/text.gif" border="0" class="vm" alt="" /> <span style="white-space: nowrap" id="attach_490326" onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})"> <a href="javascript:;" class="loginf">raw_data.txt</a> <em class="xg1">(1 KB, 下载次数: 1)</em> </span> <div class="tip tip_4" id="attach_490326_menu" style="position: absolute; display: none" disautofocus="true"> <div class="tip_c xs0"> <div class="y">2020-7-21 15:16 上传</div> 点击文件名下载附件 </div> <div class="tip_horn"></div> </div> </ignore_js_op> #### 在MATLAB命令行输入下列代码即可将txt文件内容读取了 ``` TXT = textread('E:\8、matlab\matlab读取txt文件数据\raw_data.txt');%%读取到TXT ``` <ignore_js_op> <img style="cursor:pointer;" id="aimg_490343" aid="490343" src="static/image/common/none.gif" onclick="zoom(this, this.getAttribute('zoomfile'), 0, 0, '0')" zoomfile="data/attachment/forum/202007/21/154257l6jg7b58592b5pwn.png" file="data/attachment/forum/202007/21/154257l6jg7b58592b5pwn.png.thumb.jpg" inpost="1" onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})" /> <div class="tip tip_4 aimg_tip" id="aimg_490343_menu" style="position: absolute; display: none" disautofocus="true"> <div class="xs0"> <p><strong>1.png</strong> <em class="xg1">(3.54 KB, 下载次数: 0)</em></p> <p> <a href="javascript:;" class="loginf" >下载附件</a> <a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_490343" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=490343&handlekey=savephoto_490343">保存到相册</a> </p> <p class="xg1 y">2020-7-21 15:42 上传</p> </div> <div class="tip_horn"></div> </div> </ignore_js_op> ## 二、对txt文件中的数据进行图形显示 #### 编写运行程序 ``` %%%% txt文件数据读取与处理 %%%% function Txt_Raw_data() TXT = textread('E:\8、matlab\matlab读取txt文件数据\raw_data.txt')%%读取到TXT Length = length(TXT);%%计算长度 m = 1:1:Length; %%描点 plot(m,TXT) %%画图 ``` #### 保存脚本文件后，将其添加到路径，点击下图中的运行 <ignore_js_op> <img style="cursor:pointer;" id="aimg_490344" aid="490344" src="static/image/common/none.gif" onclick="zoom(this, this.getAttribute('zoomfile'), 0, 0, '0')" zoomfile="data/attachment/forum/202007/21/154929w8dk9xko9xud26k9.png" file="data/attachment/forum/202007/21/154929w8dk9xko9xud26k9.png.thumb.jpg" inpost="1" onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})" /> <div class="tip tip_4 aimg_tip" id="aimg_490344_menu" style="position: absolute; display: none" disautofocus="true"> <div class="xs0"> <p><strong>2.png</strong> <em class="xg1">(27.87 KB, 下载次数: 0)</em></p> <p> <a href="javascript:;" class="loginf" >下载附件</a> <a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_490344" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=490344&handlekey=savephoto_490344">保存到相册</a> </p> <p class="xg1 y">2020-7-21 15:49 上传</p> </div> <div class="tip_horn"></div> </div> </ignore_js_op> #### 图形结果就显示出来了： <ignore_js_op> <img style="cursor:pointer;" id="aimg_490345" aid="490345" src="static/image/common/none.gif" onclick="zoom(this, this.getAttribute('zoomfile'), 0, 0, '0')" zoomfile="data/attachment/forum/202007/21/155041vflztgvrqldgg6hl.jpg" file="data/attachment/forum/202007/21/155041vflztgvrqldgg6hl.jpg.thumb.jpg" inpost="1" onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})" /> <div class="tip tip_4 aimg_tip" id="aimg_490345_menu" style="position: absolute; display: none" disautofocus="true"> <div class="xs0"> <p><strong>3.jpg</strong> <em class="xg1">(19.25 KB, 下载次数: 0)</em></p> <p> <a href="javascript:;" class="loginf" >下载附件</a> <a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_490345" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=490345&handlekey=savephoto_490345">保存到相册</a> </p> <p class="xg1 y">2020-7-21 15:50 上传</p> </div> <div class="tip_horn"></div> </div> </ignore_js_op> #### 在图形中，可以使用数据点观察图形上具体某一点的值。 <ignore_js_op> <img style="cursor:pointer;" id="aimg_490346" aid="490346" src="static/image/common/none.gif" onclick="zoom(this, this.getAttribute('zoomfile'), 0, 0, '0')" zoomfile="data/attachment/forum/202007/21/155250oewaoaf7wvh5tmg7.jpg" file="data/attachment/forum/202007/21/155250oewaoaf7wvh5tmg7.jpg.thumb.jpg" inpost="1" onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})" /> <div class="tip tip_4 aimg_tip" id="aimg_490346_menu" style="position: absolute; display: none" disautofocus="true"> <div class="xs0"> <p><strong>5.jpg</strong> <em class="xg1">(42.88 KB, 下载次数: 0)</em></p> <p> <a href="javascript:;" class="loginf" >下载附件</a> <a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_490346" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=490346&handlekey=savephoto_490346">保存到相册</a> </p> <p class="xg1 y">2020-7-21 15:52 上传</p> </div> <div class="tip_horn"></div> </div> </ignore_js_op>

freebsder

应该是比较常用的操作吧。

宋元浩

读写操作文件，matlab没有标准read write接口？

bqgup

freebsder 发表于 2020-7-21 20:16 应该是比较常用的操作吧。

是的是的，

bqgup

宋元浩 发表于 2020-7-21 21:56 读写操作文件，matlab没有标准read write接口？

有标准的命令函数接口