forked from markummitchell/engauge-digitizer
-
Notifications
You must be signed in to change notification settings - Fork 0
/
answerpointgraph.html
92 lines (91 loc) · 3.73 KB
/
answerpointgraph.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML>
<HEAD>
<TITLE>Engauge Digitizer - Digitizing Point Graphs</TITLE>
<META NAME="keywords" CONTENT="Engauge Digitizer, browser based documentation, online manual, Digitizing Point Graphs">
<META NAME="description" CONTENT="Steps for digitizing point graphs">
</HEAD>
<BODY>
<H2>
<A HREF="index.html">
<IMG SRC="animation.png" ALIGN=MIDDLE ALT="" STYLE="border: 0px"></A>
Engauge Digitizer - Digitizing Point Graphs</H2>
<HR WIDTH="100%">
<TABLE WIDTH="80%" ALIGN="CENTER" BGCOLOR="pink"><TR><TD>
Warning: Not all point graphs work well when automatically matching points
in Engauge. Before going any further, you may want to read about
<A HREF="pointmatchrequirements.html">point match requirements</A>.
</TD></TR></TABLE>
<H3>Typical Set of Steps To Digitize Point Graphs</H3>
<P>The following steps digitize a linear cartesian graph with
points along one curve:</P>
<UL>
<LI>Obtain an image file (bitmap, jpeg or other) showing one or more
graphs and both axes</LI>
<LI>Import the image file using one of the following options:
<UL>
<LI>File/Import menu option</LI>
<LI>Copying and pasting</LI>
<LI>Dragging and dropping</LI>
</UL>
</LI>
<LI>Click on the Axes Point button before entering axes points. These
will define the coordinate system</LI>
<LI>Click on one of the axes to add the first axes point, then enter
its graph coordinates</LI>
<LI>Click on one of the axes to add the second axes point, then enter
its graph coordinates</LI>
<LI>Click on one of the axes to add the third axes point, then enter
its graph coordinates</LI>
<LI>Click on the <A HREF="tutorautopointgraph.html">Point Match</A> button
to automatically digitize many
curve points.</LI>
<LI>Click on a sample point, and then use the arrow keys to accept
or reject points that match the sample point.</LI>
<LI>Click on the Curve Points button to manually enter curve points.</LI>
<LI>Click on the curve to add a curve point</LI>
<LI>Repeat the previous step until the curve is covered with a
sufficient number of curve points</LI>
<LI>Export curve points using one of the following options:
<UL>
<LI>File/Export menu option to save <A HREF="dlgexport.html">selected
curves</A> into a tabular text file</LI>
<LI>Copying and pasting to copy points in the current curve from the
<A HREF="dlgcurvegeometry.html">curve geometry window</A> to another application</LI>
<LI>Dragging and dropping to copy points in the current curve from the
<A HREF="dlgcurvegeometry.html">curve geometry window</A> to another application</LI>
</UL>
</LI>
</UL>
<H3>Optional Steps</H3>
<P>To clean up the image for better performance of
Segment Fill and Point Match:
steps:</P>
<UL>
<LI>Show the processed image, rather than the original image, by
selecting the View/Background/Show Filtered Image menu option</LI>
<LI>Adjust the discretize settings using the Settings/Discretize
menu option, until unwanted parts of the image disappear</LI>
<LI>Remove grid lines using the Settings/Grid Removal
menu option</LI>
</UL>
<P>For a graph that is logarithmic or polar:</P>
<UL>
<LI>Select the Settings/Coords menu option to bring up the
<A HREF="dlgcoordsys.html">coordinates window</A></LI>
<LI>Select the appropriate coordinate settings</LI>
</UL>
<P>For a graph with more than one curve:</P>
<UL>
<LI>Select the Settings/Curves menu option to bring up the
<A HREF="dlgcurves.html">curves window</A></LI>
<LI>Click on the New button to create a new curve, then enter the
name of the new curve</LI>
<LI>Repeat the previous step until all desired curve names have
been entered</LI>
<LI>In the main window, use the Curves combobox to select a curve.
While that curve is selected, all new curve points will be assigned
to that curve</LI>
</UL>
</BODY>
</HTML>