diff options
Diffstat (limited to 'gnuplot.lua')
| -rw-r--r-- | gnuplot.lua | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/gnuplot.lua b/gnuplot.lua index 5cfe4ff..0532f55 100644 --- a/gnuplot.lua +++ b/gnuplot.lua @@ -467,6 +467,62 @@ local function getsplotvars(t) return legend,x,y,z end +local function getscatter3vars(t) + local legend = nil + local x = nil + local y = nil + local z = nil + + local function istensor(v) + return type(v) == 'userdata' and torch.typename(v):sub(-6) == 'Tensor' + end + + local function isstring(v) + return type(v) == 'string' + end + + if #t ~= 3 and #t ~= 4 then + error('expecting [string,] tensor, tensor, tensor') + end + + if isstring(t[1]) then + if #t ~= 4 then + error('expecting [string,] tensor, tensor, tensor') + end + for i = 2, 4 do + if not istensor(t[i]) then + error('expecting [string,] tensor, tensor, tensor') + end + end + legend = t[1] + x = t[2] + y = t[3] + z = t[4] + elseif istensor(t[1]) then + if #t ~= 3 then + error('expecting [string,] tensor, tensor, tensor') + end + for i = 2, 3 do + if not istensor(t[i]) then + error('expecting [string,] tensor, tensor, tensor') + end + end + x = t[1] + y = t[2] + z = t[3] + legend = '' + else + error('expecting [string,] tensor, tensor, tensor') + end + + assert(x:dim() == 1 and y:dim() == 1 and z:dim() == 1, + 'x, y and z must be 1D') + assert(x:isSameSizeAs(y) and x:isSameSizeAs(z), + 'x, y and z must be the same size') + + return legend, x, y, z +end + local function getimagescvars(t) local palette = nil local x = nil @@ -595,6 +651,35 @@ local function gnu_splot_string(legend,x,y,z) return hstr,table.concat(dstr) end +local function gnu_scatter3_string(legend, x, y, z) + local hstr = string.format('%s\n','set contour base') + hstr = string.format('%s%s\n',hstr,'set style data points\n') + hstr = string.format('%s%s\n',hstr,'set hidden3d\n') + + hstr = hstr .. 'splot ' + local dstr = {''} + local coef + for i = 1, #legend do + if i > 1 then hstr = hstr .. ' , ' end + hstr = hstr .. " '-'title '" .. legend[i] .. "' " .. 'with points' + end + hstr = hstr .. '\n' + for i = 1, #legend do + local xi = x[i] + local yi = y[i] + local zi = z[i] + for j = 1, xi:size(1) do + local xij = xi[j] + local yij = yi[j] + local zij = zi[j] + table.insert(dstr, + string.format('%g %g %g\n', xij, yij, zij)) + end + table.insert(dstr, 'e\n') + end + return hstr, table.concat(dstr) +end + local function gnu_imagesc_string(x,palette) local hstr = string.format('%s\n','set view map') hstr = string.format('%s%s %s\n',hstr,'set palette',palette) @@ -753,6 +838,11 @@ local function gnusplot(legend,x,y,z) writeToCurrent(hdr) writeToCurrent(data) end +local function gnuscatter3(legend, x, y, z) + local hdr, data = gnu_scatter3_string(legend, x, y, z) + writeToCurrent(hdr) + writeToCurrent(data) +end local function gnuimagesc(x,palette) local hdr,data = gnu_imagesc_string(x,palette) writeToCurrent(hdr) @@ -918,6 +1008,41 @@ function gnuplot.splot(...) gnusplot(legends,xdata,ydata,zdata) end +-- scatter3(x, y, z) +-- scatter3({x1, y1, z1}, {x2, y2, z2}) +-- scatter3({'name1', x1, y1, z1}, {'name2', x2, y2, z2}) +function gnuplot.scatter3(...) + local arg = {...} + if select('#', ...) == 0 then + error('no inputs, expecting at least a matrix') + end + + local xdata = {} + local ydata = {} + local zdata = {} + local legends = {} + + if type(arg[1]) == "table" then + if type(arg[1][1]) == "table" then + arg = arg[1] + end + for i,v in ipairs(arg) do + local l, x, y, z = getscatter3vars(v) + legends[#legends + 1] = l + xdata[#xdata + 1] = x + ydata[#ydata + 1] = y + zdata[#zdata + 1] = z + end + else + local l, x, y, z = getscatter3vars(arg) + legends[#legends + 1] = l + xdata[#xdata + 1] = x + ydata[#ydata + 1] = y + zdata[#zdata + 1] = z + end + gnuscatter3(legends, xdata, ydata, zdata) +end + -- imagesc(x) -- x 2D tensor [0 .. 1] function gnuplot.imagesc(...) local arg = {...} |