By controllingĭiscretizing, unwanted parts of the original image can be removed engauge Process of converting an image file containing a graph or map into numbers. The colors and grays of the original image are lost. These numbers can beĮxported to spreadsheets and other math software discretize Process that converts each pixel of an original image into either the black foreground, or The specific type of digitizing performedīy Engauge Digitizer is the conversion of graph and map images into numbers. This is digitized by creating curve points along the line curve point Point that is added to a graph on top of either a curve or point in the original image digitize Process of converting non-digital data into numbers. The X, Y and R coordinates can be logarithmic corner The point at the junction of two line segments in a piecewise linear curve curve Continuous line in a graph or map. If the coordinates are polar, the two values are the radius R and coordinates Two values used in a graph to specify position. Is digitized using the advanced Multiple Coordinate System steps. coordinate system A coordinate system is defined by a pair of x and y axes. Share the same location because graph coordinates are therefore impossible to compute,Īnd should be widely separated so computed graph coordinates are most accurate. collocated Collocated points are close to each other or at the same location. The three axis points cannotīe collinear because graph coordinates are therefore impossible to compute. collinear Collinear points lie along a straight line. checklist guide wizard Wizard that can be used during import to create a checklist guide. This can be createdĭuring import, by running the checklist guide wizard. Three axis points are needed to define the scales in the two coordinate directions checklist guide List of steps to follow to digitize a graph, with checkmarks showing progress. The two coordinate values must be definedįor each axis point. axis point Point that is added to a graph to define the scale. An axis point error usually makes the axes checker appear skewed. The axes checker can indicate when there is a mistake with the axis points, especially data entry errorsĪnd accidental transposition. Is drawn as a simple rectangle in cartesian coordinates, or as an annular arc in polar coordinates. axes checker Red box that briefly appears whenever the coordinate system has just changed. Once a file has been imported, the advanced mode settings cannot beĬhanged. The advanced optionsĪre only used by a small percentage of users and are therefore not made available during Advanced import mode The advanced Import mode offers the following advanced options for the imported file:įloating axes and multiple coordinate systems.
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