我想知道我应该编写什么语法来使用GraphVizWriter以png格式显示我的图形?
我使用dotNetRDF库。
private void button1_Click(object sender, EventArgs e)
{
Stream myStream = null;
var parser = new Notation3Parser();
var graph = new Graph();
OpenFileDialog openFileDialog1 = new OpenFileDialog();
openFileDialog1.Filter = "RDF files (*.n3)|*.n3";
openFileDialog1.FilterIndex = 1;
openFileDialog1.RestoreDirectory = true;
openFileDialog1.Multiselect = false;
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
try
{
if ((myStream = openFileDialog1.OpenFile()) != null)
{
using (myStream)
{
string s = openFileDialog1.FileName.ToString();
string w= Directory.GetCurrentDirectory().ToString();
string Fname = openFileDialog1.SafeFileName.ToString();
File.Copy(s,Path.Combine(w,Fname),true);
Win32.AllocConsole();
s1 = Path.Combine(w, Fname);
showPath.Text = s1;
String parentvalueadress = this.s1;
showPath.Visible = true;
insertNodeButton.Visible = true;
delBut.Visible = true;
showNodes showNodes1 = new showNodes(s1);
g = showNodes1.returngraph();
Console.Read();
Win32.FreeConsole();
this.Show();
}
}
}
catch (Exception ex)
{
MessageBox.Show("Error: Could not read file from disk. Original error: " + ex.Message);
}
}
}
首先我读了一个n3文件格式,然后我用魔杖显示我的图形图像
答案 0 :(得分:1)
看起来dotNetRDF不直接产生png输出。提到的类输出点文件。
来自documentation of the library:
从RDF图生成GraphViz DOT格式文件的Writer
您必须使用Graphviz获取输出并生成实际图像。