Use the added Line Style List tab to customize the default list.įor those plot types that support this feature, clicking the browse button to the right of the Style list opens the Custom Dash line dialog box. At each point in the line, the line style will be advanced one style. Increment: Use this to increment line style "by point".Please note that only columns in the current worksheet will be listed in the drop-down list. Indexing: For the 2D line or line+symbol graph, you can select a column from the drop-down list to set the connection line style indexed to values in that column.Specify whether connect the symbols using straight line for 3D Scatter/Trajectory/Vector graph. When the datasets contains missing value, some connect method may not available, in order to connect the data with smooth line, you can use the Analysis:Mathematics:Interpolate/Extrapolate to create.The Line Connect Type in the context menu will be the same as the option selected in the Connect drop-down list. To do this, right click on the data plot and choose Create Line Connect Type Data from the context menu. interpolation is used and it is not linear interpolation), it is then possible to generate the interpolated data directly from the data plot. If the Connect is not No Line, Straight, 2 Point Segment nor 3 Point Segment (i.e.One similarity of the B-Spline and Spline connection types is that B-Spline shares Spline's requirements that X-values be discrete and increasing, and the number of points be less than 900.For 3D Scatter/Trajectory/Vector graph, once the Connect Symbols been checked, only three connection types, Straight, Spline and B-Spline, are supported.The akima interpolation will not oscillate because of outliers. This connection method generates an Akima Spline with the Akima Spline interpolation algorithm. This connection method generates a Bezier curve using the same algorithm as the Bezier method, but instead of using four consecutive data points, it uses two points from the data and two interpolated points as control points. The derivatives of the curve are not continuous over the whole range but within each section (where t ranges from 0 to 1), the curve is continuous up to the second order derivative. The next section of the curve is constructed with, and the process is repeated until all data points are included (if the total number of points is not a multiple of 4, the remaining 1-3 points are not used in the connection). The curve always passes through the first and the fourth points, but not the second and third. Origin uses four consecutive data points, say to construct a section of the Bezier curve, letting t range from 0 to 1. It can be described by parametric equations around four original data points: The Bezier curve is very similar to the B-spline curve. Each point is in the middle of the vertical run. This option generates a right angle connection. Each point is in the middle of the horizontal run. ![]() ![]() The SplineStep variable in the ORIGIN.INI file controls the spline calculation increment. Since curvature information is held in memory, the spline resolution remains the same regardless of page magnification. Furthermore, the number of data points cannot exceed 900 (if the size of the data set exceeds this number, the operation will fail). To use the connection, the X values must be discrete and increasing. This option generates a cubic spline connection. (Origin duplicates the first and last data points so the curve passes through them.) ![]() Unlike spline curves which pass through the original data points, the B-spline curve winds around the original data points without passing through them. This cubic B-spline curve is continuous up to a second order derivative. The coordinates are calculated around each point, letting t range from 0 to 1. ![]() The B-spline curve can be described by parametric equations. The connection display alternates between Straight for three points, No Line, Straight for three points, etc.įor a pair of data sets with coordinates Origin makes a smooth curve using a cubic B-spline connection. The connection display alternates between Straight and No Line. Select the desired line connection from this drop-down list.Ī straight line is displayed between data points.
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