func (a *Api) ReadData(d filestore.DataPoint) {
f := filestore.OpenForRead(a.filename)
defer f.Close()
stat, _ := f.Stat()
filesize := stat.Size()
fmt.Println(filesize, d.Size(), filesize/d.Size())
err := d.Read(f)
if err != nil {
fmt.Println("Error", err)
}
}
func (a *Api) WriteData(d filestore.DataPoint) {
f := filestore.OpenForWrite(a.filename)
defer f.Close()
d.Write(f)
}