在Matlab中将价格转换为字符串中的可用数字

Question

我试图将从网址获取的价格值转换为数字。返回的字符串给出了带有美元符号的价格。

function [ price ] = price( url )
%UNTITLED4 Summary of this function goes here
%   Detailed explanation goes here

x = urlread(url)

y = regexpi(x, '<span id="ajaxPrice" class="pReg" itemprop="price">(.*?)</span>','tokens')

price = y{1}{1}

end

这是我用来获取价格价值的功能。

当我使用该功能时：

material = price('url')

将输出

material = '$578.56'

我确信有一个简单的解决方案，但我很难到达那里。 num2str返回一个空数组。先感谢您。

Answer 1

function [ price ] = price( url )
%UNTITLED4 Summary of this function goes here
%   Detailed explanation goes here

x = urlread(url)

y = regexpi(x, '<span id="ajaxPrice" class="pReg" itemprop="price">(.*?)</span>','tokens')

price = y{1}{1}

end

Answer 2

未来的谷歌

function [ price ] = price( url )  
%UNTITLED4 Summary of this function goes here
%   Detailed explanation goes here

x = urlread(url)

y = regexpi(x, '<span id="ajaxPrice" class="pReg" itemprop="price">(.*?\d*)</span>','tokens')

z = y{1}{1}

a = strrep(z,'$','')

price = str2num(a)

end