我想知道尝试下载采样率的程序是否适合如下指令：y = downsample（x，n）
downsamp_rate = 40;
downsampled_data = downsample(X,downsamp_rate);
..因为我怀疑为什么两个矩阵的第一列完全相同（原始矩阵和下载的样本）保持相同的数据....
然后其他数据已经转换为较低的采样率。
非常感谢你！
最佳！
编辑：示例数据。我粘贴了数据，但我可以上传de .mat文件。
原始数据。
column 1 column 2 column 3
-0,593600000000000 -0,592699999999996 -0,591899999999995
2,42180000000000 2,41010000000000 2,40360000000000
1,78550000000000 1,79020000000000 1,79530000000000
-1,30590000000000 -1,31520000000000 -1,31530000000000
-0,707800000000003 -0,712699999999999 -0,727700000000003
-0,986500000000001 -0,996000000000002 -1,00460000000000
-0,989699999999999 -0,989699999999999 -0,989699999999999
1,23500000000000 1,22970000000000 1,21880000000000
0,122899999999998 0,127899999999997 0,128899999999998
0,938300000000003 0,937500000000002 0,936200000000004
0,248600000000004 0,248500000000002 0,248700000000002
-0,381499999999996 -0,393199999999999 -0,393699999999997
0,294099999999997 0,279299999999999 0,271299999999997
-0,223200000000001 -0,223699999999999 -0,227299999999997
0,0879999999999992 0,117300000000004 0,122500000000003
-0,167899999999999 -0,170999999999999 -0,174800000000003
-0,687499999999996 -0,697199999999998 -0,701600000000002
-0,681700000000002 -0,682200000000000 -0,683000000000000
1,19659999999999 1,19670000000000 1,19490000000000
-0,565500000000008 -0,565199999999999 -0,557400000000008
下采样数据
column 1 column 2 column 3
-0,593600000000000 0,821900000000003 0,936300000000001
2,42180000000000 1,14610000000000 -0,255400000000000
1,78550000000000 2,86550000000000 3,66890000000000
-1,30590000000000 7,01950000000000 12,9564000000000
-0,707800000000003 3,05920000000000 0,852999999999998
-0,986500000000001 -0,372200000000000 -0,951000000000002
-0,989699999999999 -0,988000000000000 -1,21730000000000
1,23500000000000 5,79700000000000 3,40880000000000
0,122899999999998 5,32230000000000 5,19260000000000
0,938300000000003 4,88130000000000 7,55900000000000
0,248600000000004 4,79290000000000 2,96620000000000
-0,381499999999996 -0,400000000000000 0,641500000000000
0,294099999999997 -0,131400000000004 -1,20040000000000
-0,223200000000001 1,49610000000000 1,59030000000000
0,0879999999999992 0,418700000000000 -0,0114999999999976
-0,167899999999999 0,0149999999999983 -0,857500000000000
-0,687499999999996 -0,593100000000002 0,119700000000000
-0,681700000000002 -0,170000000000003 0,126799999999999
1,19659999999999 1,17670000000000 1,15780000000000
-0,565500000000008 8,89019999999999 6,58569999999999
答案 0 :(得分：0)
输出的可能性是周期长度为namespace panelApplication
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void copy_Click(object sender, EventArgs e)
{
// dataGridView2.Rows.Clear(); (code used if you want to delete previous selections)
foreach (DataGridViewRow item in dataGridView1.Rows)
{
if (item.Selected == true)
{
int n = dataGridView2.Rows.Add();
dataGridView2.Rows[n].Cells[0].Value = item.Cells[0].Value.ToString();
dataGridView2.Rows[n].Cells[1].Value = item.Cells[1].Value.ToString();
dataGridView2.Rows[n].Cells[2].Value = item.Cells[2].Value.ToString();
}
}
}
public void fetch_Click(object sender, EventArgs e)
{
this.productsTableAdapter.Fill(this.productsDataset.products);
productsDataset dt = new productsDataset();
foreach (DataRow item in dt.products.Rows)
{
int n = dataGridView1.Rows.Add();
dataGridView1.Rows[n].Cells[1].Value = item["product_id"].ToString();
dataGridView1.Rows[n].Cells[2].Value = item["product_name"].ToString();
dataGridView1.Rows[n].Cells[3].Value = item["category_id"].ToString();
}
}
private void delete_btn_Click(object sender, EventArgs e)
{
try
{
if (dataGridView1.Rows.Cell[0].Text == TextBox1.tex) // error on this line.
{
}
}
catch (System.Exception)
{
MessageBox.Show("Not able to Delete");
}
}
private void dataGridView2_CellContentClick_1(object sender, DataGridViewCellEventArgs e)
{
if (e.RowIndex >= 0)
{
DataGridViewRow row = this.dataGridView2.Rows[e.RowIndex];
product_idTxtbx.Text = row.Cells["product_id"].Value.ToString();
proName_txtbx.Text = row.Cells["product_name"].Value.ToString();
catID_txtbx.Text = row.Cells["category_id"].Value.ToString();
}
}
private void dataGridView2_CellClick(object sender, DataGridViewCellEventArgs e)
{
if (e.RowIndex >= 0)
{
DataGridViewRow row = this.dataGridView2.Rows[e.RowIndex];
product_idTxtbx.Text = row.Cells["product_id"].Value.ToString();
proName_txtbx.Text = row.Cells["product_name"].Value.ToString();
catID_txtbx.Text = row.Cells["category_id"].Value.ToString();
}
}
private void delete2_Click(object sender, EventArgs e)
{
// if (dataGridView1.Rows["row.index"].Cells["productidDG"].Value.ToString() == product_idTxtbx.Text)
{
}
}
}
的周期性输入信号。举一个简短的演示：
downsamp_rate-1因此，看看你的行40,41,42。我假设第一个值与你的行1,2,3
相同