Labels:text | screenshot | font | black and white | black OCR: Chapter 1 Introduction Scientific plotting programs fall into two main categories. The first is the non interactive type repre- sented by most mainframe plotting programs which require that the plot be specified as a file of plotting instructions. This file is edited using a text editor and then the plot is generated by executing this file. The second major type of plotting programs are those popularized on PCs which allow a user to specify the drawing using a mouse and are inherently interactive. This type of program is easier to use and it is possible to rapidly make changes. It is however not ideal since the drawing is usually stored in a proprietary, non-text format which is difficult to interpret. This makes the task of reusing parts of a previous drawing in a new drawing or simply pl ...