GLE Library: graphutil.gle

Download "graphutil.gle"

List of subroutines:

• graph_line x1 y1 x2 y2

! Function to draw a line on a graph
! x1, y2 = start point
! x2, y2 = end point


• graph_hline y x1 x2

! Function to draw a horizontal line on a graph
! y = y-point of line
! x1, x2 = range of line


• graph_vline x y1 y2

! Function to draw a vertical line on a graph
! x = x-point of line
! y1, y2 = range of line


• invxg x



• invyg y



• graph_textbox xp yp label$ dx dy add



• graph_text xp yp label$ dx dy



• graph_del wd sca

! Function returning the offset of the drawing area of a graph
! wd = width of the graph
! sca = hscale parameter of the graph


• graph_select wd hi hsc vsc xmn xmx ymn ymx

! Initialize graph variables and functions such as xg() and yg()
! wd = width of graph
! hi = height of graph
! hsc = hscale parameter of graph
! vsc = vscale parameter of graph
! xmn, xmx = minimum and maximum xaxis value
! ymn, ymx = minimum and maximum yaxis value


• graph_hgrid nb color$

! Function to draw an horizontal equidistant grid on a graph
! (use 'under graph_hgrid 5 "red"' in your graph block)
! nb = number of lines in grid
! color$ = color for grid lines


• graph_vgrid nb color$

! Function to draw a vertical equidistant grid on a graph
! (use 'under graph_vgrid 5 "red"' in your graph block)
! nb = number of lines in grid
! color$ = color for grid lines


• graph_grid nbh nbv color$

! Function to draw an equidistant grid on a graph
! (use 'under graph_grid 5 "red"' in your graph block)
! nb = number of lines in grid
! color$ = color for grid lines


• graph_origin

! Go to the origin of a graph selected with selectgraph


• graph_zeroaxis style color$



• graph_print_inv x y



• dmaxx ds$

! Function to compute the maximum x-value of a dataset


• dmaxy ds$

! Function to compute the maximum y-value of a dataset


• dminx ds$

! Function to compute the minimum x-value of a dataset


• dminy ds$

! Function to compute the minimum y-value of a dataset


• dmeany ds$

! Function to compute the mean y-value of a dataset


• darea ds$

! Function to compute the area between a dataset and the x-axis


• dmeany_x d$ x

! compute average y-value for given x-value x for dataset d$


• derry_up_x d$ x

! compute maximum upward deviation from the mean y-value


• derry_down_x d$ x

! compute maximum downward deviation from the mean y-value


• bar_draw_error_interval bar xval yval error

! Function to draw an error interval on a bar dataset with multiple bars


• bar_draw_error_intervals data$ err$ bar

! Function to draw error intervals on a bar dataset with multiple bars
! E.g.,
!
! begin graph
! data "mydata.csv"
! bar d1,d3 fill grey50,grey20
! end graph
!
! bar_draw_error_intervals "d1" "d2" 1
! bar_draw_error_intervals "d3" "d4" 2

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