# Data Set of Line Drawings: Symbols for Surface Weather Analysis in Japan

by Hiroki Yamamoto and Kazunori Iwata
last modified July 26, 2018

## 1. What is the Data Set ?

The data set consists of 200 text format files, each of which
represents a line drawing of symbol in surface weather analysis in Japan.
Each shape is classified into one of ten classes, and there are 20
shapes in each class.
Each line of the file is expressed as a vector *(t, x(t),
y(t))* where *t* denotes time (milli-second) which has
passed from the start of drawing line, and *x(t)* and
*y(t)* denote the coordinates of point at time *t*.
## 2. How to get ?

The data set is free and everyone is permitted to use them.
We will accept that you have the freedom to distribute the data set.
Before downloading, please understand that we abdicate responsibility
for any trouble and any technical support regarding the data set.
You must accept this statement to download it.
#### Download

## 3. How to use ?

You can visualize a text file of the data set using gnuplot, Drawing Panel, MS Excel, etc.
### With gnuplot

When plotting a file "xxx.txt" with gnuplot, launch as follows.

`> set yrange [] reverse`

`> plot "xxx.txt" using 2:3 with lines`

### With Drawing Panel

Selecting ``Open'' item will plot a file.
## References

H. Yamamoto, K. Iwata, and N. Suematsu,
*Accelerating Shape Matching with the Correspondence of Nearest Sample Points*,
Proceedings of the 68th Meeting on Chugoku Branch of Electrical and
Information Societies of Japan, Oct. 2017. (in Japanese)

[B A C K]

All Right Reserved by Kazunori Iwata