gsl-shell.git - gsl-shell

diff --git a/gdt-plot.lua b/gdt-plot.lua
index 5438d05f..50ce5d99 100644
--- a/gdt-plot.lua
+++ b/gdt-plot.lua

@@ -166,13 +166,16 @@ local function rect_funcbin(t, jxs, jys, jes)

local f0 = jp.f0 and jp.f0() or 0

local e = collate_factors(t, i, jes)

e[#e+1] = jp.name

- local ie = add_unique(enums, e)

- local ix = add_unique(labels, c)

- local cc = vec2d_incr(count, ix, ie)

- local v_accu = vec2d_get(val, ix, ie) or f0

+

local v = t:get(i, jy)

- vec2d_set(val, ix, ie, fy(v_accu, v, cc))

- fini_table[ie] = fini

+ if v then

+ local ie = add_unique(enums, e)

+ local ix = add_unique(labels, c)

+ local cc = vec2d_incr(count, ix, ie)

+ local v_accu = vec2d_get(val, ix, ie) or f0

+ vec2d_set(val, ix, ie, fy(v_accu, v, cc))

+ fini_table[ie] = fini

+ end

end

end