我有400个文件,每个文件包含大约500000个字符,而这500000个字符只包含大约20个字母。我想制作一个直方图,表示使用的最多10个字母(x轴)和每个字母的使用次数(y轴)。我写了这个代码有缺少的东西,我想知道每个条形对应哪个字母。我应该在代码上添加什么?你可以改变整个代码,但保持这个对我来说更好。提供整个代码,以便我可以将其直接复制到脚本并运行它。
<%@ Page Title="Register" Language="vb" AutoEventWireup="false" MasterPageFile="~/Site.Master" CodeBehind="Register.aspx.vb" Inherits="WebFormsIdentity.Register" %>
<%@ Import Namespace="WebFormsIdentity" %>
<%@ Import Namespace="Microsoft.AspNet.Identity" %>
<asp:Content runat="server" ID="BodyContent" ContentPlaceHolderID="MainContent">
<h2><%: Title %>.</h2>
<p class="text-danger">
<asp:Literal runat="server" ID="ErrorMessage" />
</p>
<div class="form-horizontal">
<h4>Create a new account</h4>
<hr />
<asp:ValidationSummary runat="server" CssClass="text-danger" />
<div class="form-group">
<asp:Label runat="server" AssociatedControlID="Email" CssClass="col-md-2 control-label">Email</asp:Label>
<div class="col-md-10">
<asp:TextBox runat="server" ID="Email" CssClass="form-control" TextMode="Email" />
<asp:RequiredFieldValidator runat="server" ControlToValidate="Email"
CssClass="text-danger" ErrorMessage="The email field is required." />
</div>
</div>
<div class="form-group">
<asp:Label runat="server" AssociatedControlID="Password" CssClass="col-md-2 control-label">Password</asp:Label>
<div class="col-md-10">
<asp:TextBox runat="server" ID="Password" TextMode="Password" CssClass="form-control" />
<asp:RequiredFieldValidator runat="server" ControlToValidate="Password"
CssClass="text-danger" ErrorMessage="The password field is required." />
</div>
</div>
<div class="form-group">
<asp:Label runat="server" AssociatedControlID="ConfirmPassword" CssClass="col-md-2 control-label">Confirm password</asp:Label>
<div class="col-md-10">
<asp:TextBox runat="server" ID="ConfirmPassword" TextMode="Password" CssClass="form-control" />
<asp:RequiredFieldValidator runat="server" ControlToValidate="ConfirmPassword"
CssClass="text-danger" Display="Dynamic" ErrorMessage="The confirm password field is required." />
<asp:CompareValidator runat="server" ControlToCompare="Password" ControlToValidate="ConfirmPassword"
CssClass="text-danger" Display="Dynamic" ErrorMessage="The password and confirmation password do not match." />
</div>
</div>
<div class="form-group">
<div class="col-md-offset-2 col-md-10">
<asp:Button runat="server" OnClick="CreateUser_Click" Text="Register" CssClass="btn btn-default" />
</div>
</div>
</div>
</asp:Content>
答案 0 :(得分:0)
首先,您使用hist
是错误的。 hist(data,10)
将根据包含10个bin的数据创建直方图,因此bin将对应于文件中的多个字符。
解决此问题的方法是在预定义的二进制文件上使用hist
,如:
bins = 1:255; % define the bins for hist
histSum = zeros(numel(bins),1);
for file=1:10;
data = randi(25,100) + 'a'; %Generate random data - letters between 'a' and 'z'
data = reshape(T,numel(T),1); % Make it a vector
histSum = histSum + hist(data,bins)';
end
请注意,您必须定义容器以容纳所有可能的值,因此范围从1到255