sagews: rendering a poset fails

[haraldschilly]

In a SageWS, I think this should work, but fails

CT = "E7"
W = WeylGroup(CT)
AS = W.domain()
FW = AS.fundamental_weights()
RP = AS.root_poset(facade=True)
nonparabolic_roots = [x.to_ambient() for x in AS.root_system.root_lattice().positive_roots_nonparabolic(index_set=(1,2,3,4,5,6))]
print(len(nonparabolic_roots))
p0 = RP.subposet(nonparabolic_roots)

# p0.plot() # <- this works!

show(p0)

with

14
Error in lines 1-1
Traceback (most recent call last):
  File "/projects/sage/sage-7.6/local/lib/python2.7/site-packages/smc_sagews/sage_server.py", line 995, in execute
    exec compile(block+'\n', '', 'single') in namespace, locals
  File "", line 1, in <module>
  File "/projects/sage/sage-7.6/local/lib/python2.7/site-packages/smc_sagews/sage_salvus.py", line 2649, in show
    s = show0(objs, combine_all=True)
  File "/projects/sage/sage-7.6/local/lib/python2.7/site-packages/smc_sagews/sage_salvus.py", line 2610, in show0
    b = show0(a)
  File "/projects/sage/sage-7.6/local/lib/python2.7/site-packages/smc_sagews/sage_salvus.py", line 2635, in show0
    sage.misc.latex.latex.eval(s)
  File "/projects/sage/sage-7.6/local/lib/python2.7/site-packages/smc_sagews/sage_salvus.py", line 1467, in latex0
    sage.misc.latex.Latex.eval(sage.misc.latex.latex, s, **kwds)
  File "/projects/sage/sage-7.6/local/lib/python2.7/site-packages/sage/misc/latex.py", line 1130, in eval
    os.path.join(orig_base, filename + ".png"))
  File "/projects/sage/sage-7.6/local/lib/python/shutil.py", line 119, in copy
    copyfile(src, dst)
  File "/projects/sage/sage-7.6/local/lib/python/shutil.py", line 82, in copyfile
    with open(src, 'rb') as fsrc:
IOError: [Errno 2] No such file or directory: '/projects/20e4a191-73ea-4921-80e9-0a5d792fc511/.sage/temp/compute0-us/1132/dir_vSd5c3/tmpvffo_v.png'

Ref: ZD-3716

[vit-tucek]

It worked this morning and then it stopped for no apparent reason.

[williamstein]

Weird. I tried open('a.tex','w').write(latex(p0)), then put some header/footer info in a.tex, and it works fine to show the diagram:

Also %latex in sage worksheets isn't broken.

[vit-tucek]

Nope, %latex is broken too! I've just checked and this

%latex \begin{tikzpicture}[>=latex,line join=bevel,] %% \node (node_14) at (19.0bp,6.5bp) [draw,draw=none] {${{{-}a{ }+{ }1}}$}; \node (node_9) at (96.0bp,55.5bp) [draw,draw=none] {$2$}; \node (node_8) at (81.0bp,398.5bp) [draw,draw=none] {$9$}; \node (node_7) at (53.0bp,104.5bp) [draw,draw=none] {${{{-}a{ }+{ }3}}$}; \node (node_13) at (81.0bp,300.5bp) [draw,draw=none] {$7$}; \node (node_5) at (53.0bp,55.5bp) [draw,draw=none] {${{{-}a{ }+{ }2}}$}; \node (node_4) at (75.0bp,6.5bp) [draw,draw=none] {${{{-}a{ }+{ }1}}$}; \node (node_3) at (96.0bp,104.5bp) [draw,draw=none] {$3$}; \node (node_12) at (66.0bp,202.5bp) [draw,draw=none] {$5$}; \node (node_11) at (81.0bp,251.5bp) [draw,draw=none] {$6$}; \node (node_2) at (96.0bp,153.5bp) [draw,draw=none] {$4$}; \node (node_10) at (118.0bp,6.5bp) [draw,draw=none] {$1$}; \node (node_1) at (81.0bp,349.5bp) [draw,draw=none] {$8$}; \node (node_6) at (53.0bp,153.5bp) [draw,draw=none] {${{{-}a{ }+{ }4}}$}; \node (node_0) at (96.0bp,202.5bp) [draw,draw=none] {$5$}; \draw [black,->] (node_5) ..controls (53.0bp,68.603bp) and (53.0bp,79.062bp) .. (node_7); \draw [black,->] (node_4) ..controls (69.235bp,19.817bp) and (64.107bp,30.772bp) .. (node_5); \draw [black,->] (node_7) ..controls (64.66bp,118.24bp) and (75.615bp,130.22bp) .. (node_2); \draw [black,->] (node_13) ..controls (81.0bp,313.6bp) and (81.0bp,324.06bp) .. (node_1); \draw [black,->] (node_6) ..controls (56.367bp,166.67bp) and (59.306bp,177.3bp) .. (node_12); \draw [black,->] (node_3) ..controls (96.0bp,117.6bp) and (96.0bp,128.06bp) .. (node_2); \draw [black,->] (node_2) ..controls (96.0bp,166.6bp) and (96.0bp,177.06bp) .. (node_0); \draw [black,->] (node_1) ..controls (81.0bp,362.6bp) and (81.0bp,373.06bp) .. (node_8); \draw [black,->] (node_5) ..controls (64.66bp,69.245bp) and (75.615bp,81.219bp) .. (node_3); \draw [black,->] (node_7) ..controls (53.0bp,117.6bp) and (53.0bp,128.06bp) .. (node_6); \draw [black,->] (node_11) ..controls (81.0bp,264.6bp) and (81.0bp,275.06bp) .. (node_13); \draw [black,->] (node_14) ..controls (28.065bp,20.031bp) and (36.355bp,31.491bp) .. (node_5); \draw [black,->] (node_10) ..controls (112.23bp,19.817bp) and (107.11bp,30.772bp) .. (node_9); \draw [black,->] (node_9) ..controls (96.0bp,68.603bp) and (96.0bp,79.062bp) .. (node_3); \draw [black,->] (node_12) ..controls (69.908bp,215.75bp) and (73.351bp,226.53bp) .. (node_11); \draw [black,->] (node_0) ..controls (92.092bp,215.75bp) and (88.649bp,226.53bp) .. (node_11); \draw [black,->] (node_4) ..controls (80.503bp,19.817bp) and (85.398bp,30.772bp) .. (node_9); \draw [black,->] (node_2) ..controls (88.047bp,166.96bp) and (80.84bp,178.25bp) .. (node_12); % \end{tikzpicture}

works fine. Actually, for this poset of noncompact roots with nonnegative scalar product with cetain weight vector even view(nRP) works fine.

On the other hand, the bigger poset of all noncompact roots of $E_7$

%latex \begin{tikzpicture}[>=latex,line join=bevel,] %% \node (node26) at (233.5bp,851.0bp) [draw,draw=none] {$-\epsilon{7} + \epsilon_{8}$}; \node (node24) at (140.5bp,7.0bp) [draw,draw=none] {$-\epsilon{5} + \epsilon_{6}$}; \node (node25) at (39.5bp,421.0bp) [draw,draw=none] {$\epsilon{5} + \epsilon_{6}$}; \node (node22) at (140.5bp,57.0bp) [draw,draw=none] {$-\epsilon{4} + \epsilon_{6}$}; \node (node23) at (111.5bp,367.0bp) [draw,draw=none] {$\epsilon{4} + \epsilon_{6}$}; \node (node20) at (140.5bp,107.0bp) [draw,draw=none] {$-\epsilon{3} + \epsilon_{6}$}; \node (node21) at (111.5bp,313.0bp) [draw,draw=none] {$\epsilon{3} + \epsilon_{6}$}; \node (node9) at (111.5bp,475.0bp) [draw,draw=none] {$\frac{1}{2}\epsilon{1} - \frac{1}{2}\epsilon{2} - \frac{1}{2}\epsilon{3} - \frac{1}{2}\epsilon{4} + \frac{1}{2}\epsilon{5} + \frac{1}{2}\epsilon{6} - \frac{1}{2}\epsilon{7} + \frac{1}{2}\epsilon_{8}$}; \node (node8) at (233.5bp,799.0bp) [draw,draw=none] {$-\frac{1}{2}\epsilon{1} + \frac{1}{2}\epsilon{2} + \frac{1}{2}\epsilon{3} + \frac{1}{2}\epsilon{4} + \frac{1}{2}\epsilon{5} + \frac{1}{2}\epsilon{6} - \frac{1}{2}\epsilon{7} + \frac{1}{2}\epsilon_{8}$}; \node (node7) at (422.5bp,421.0bp) [draw,draw=none] {$-\frac{1}{2}\epsilon{1} + \frac{1}{2}\epsilon{2} + \frac{1}{2}\epsilon{3} - \frac{1}{2}\epsilon{4} - \frac{1}{2}\epsilon{5} + \frac{1}{2}\epsilon{6} - \frac{1}{2}\epsilon{7} + \frac{1}{2}\epsilon_{8}$}; \node (node6) at (350.5bp,475.0bp) [draw,draw=none] {$-\frac{1}{2}\epsilon{1} + \frac{1}{2}\epsilon{2} - \frac{1}{2}\epsilon{3} + \frac{1}{2}\epsilon{4} - \frac{1}{2}\epsilon{5} + \frac{1}{2}\epsilon{6} - \frac{1}{2}\epsilon{7} + \frac{1}{2}\epsilon_{8}$}; \node (node5) at (111.5bp,529.0bp) [draw,draw=none] {$-\frac{1}{2}\epsilon{1} + \frac{1}{2}\epsilon{2} - \frac{1}{2}\epsilon{3} - \frac{1}{2}\epsilon{4} + \frac{1}{2}\epsilon{5} + \frac{1}{2}\epsilon{6} - \frac{1}{2}\epsilon{7} + \frac{1}{2}\epsilon_{8}$}; \node (node4) at (352.5bp,529.0bp) [draw,draw=none] {$-\frac{1}{2}\epsilon{1} - \frac{1}{2}\epsilon{2} + \frac{1}{2}\epsilon{3} + \frac{1}{2}\epsilon{4} - \frac{1}{2}\epsilon{5} + \frac{1}{2}\epsilon{6} - \frac{1}{2}\epsilon{7} + \frac{1}{2}\epsilon_{8}$}; \node (node3) at (114.5bp,583.0bp) [draw,draw=none] {$-\frac{1}{2}\epsilon{1} - \frac{1}{2}\epsilon{2} + \frac{1}{2}\epsilon{3} - \frac{1}{2}\epsilon{4} + \frac{1}{2}\epsilon{5} + \frac{1}{2}\epsilon{6} - \frac{1}{2}\epsilon{7} + \frac{1}{2}\epsilon_{8}$}; \node (node2) at (114.5bp,637.0bp) [draw,draw=none] {$-\frac{1}{2}\epsilon{1} - \frac{1}{2}\epsilon{2} - \frac{1}{2}\epsilon{3} + \frac{1}{2}\epsilon{4} + \frac{1}{2}\epsilon{5} + \frac{1}{2}\epsilon{6} - \frac{1}{2}\epsilon{7} + \frac{1}{2}\epsilon_{8}$}; \node (node1) at (259.5bp,259.0bp) [draw,draw=none] {$-\frac{1}{2}\epsilon{1} - \frac{1}{2}\epsilon{2} - \frac{1}{2}\epsilon{3} - \frac{1}{2}\epsilon{4} - \frac{1}{2}\epsilon{5} + \frac{1}{2}\epsilon{6} - \frac{1}{2}\epsilon{7} + \frac{1}{2}\epsilon_{8}$}; \node (node0) at (170.5bp,207.0bp) [draw,draw=none] {$-\epsilon{1} + \epsilon_{6}$}; \node (node19) at (111.5bp,259.0bp) [draw,draw=none] {$\epsilon{2} + \epsilon_{6}$}; \node (node18) at (140.5bp,157.0bp) [draw,draw=none] {$-\epsilon{2} + \epsilon_{6}$}; \node (node17) at (111.5bp,207.0bp) [draw,draw=none] {$\epsilon{1} + \epsilon_{6}$}; \node (node16) at (352.5bp,583.0bp) [draw,draw=none] {$\frac{1}{2}\epsilon{1} + \frac{1}{2}\epsilon{2} + \frac{1}{2}\epsilon{3} + \frac{1}{2}\epsilon{4} - \frac{1}{2}\epsilon{5} + \frac{1}{2}\epsilon{6} - \frac{1}{2}\epsilon{7} + \frac{1}{2}\epsilon_{8}$}; \node (node15) at (352.5bp,637.0bp) [draw,draw=none] {$\frac{1}{2}\epsilon{1} + \frac{1}{2}\epsilon{2} + \frac{1}{2}\epsilon{3} - \frac{1}{2}\epsilon{4} + \frac{1}{2}\epsilon{5} + \frac{1}{2}\epsilon{6} - \frac{1}{2}\epsilon{7} + \frac{1}{2}\epsilon_{8}$}; \node (node14) at (233.5bp,691.0bp) [draw,draw=none] {$\frac{1}{2}\epsilon{1} + \frac{1}{2}\epsilon{2} - \frac{1}{2}\epsilon{3} + \frac{1}{2}\epsilon{4} + \frac{1}{2}\epsilon{5} + \frac{1}{2}\epsilon{6} - \frac{1}{2}\epsilon{7} + \frac{1}{2}\epsilon_{8}$}; \node (node13) at (256.5bp,313.0bp) [draw,draw=none] {$\frac{1}{2}\epsilon{1} + \frac{1}{2}\epsilon{2} - \frac{1}{2}\epsilon{3} - \frac{1}{2}\epsilon{4} - \frac{1}{2}\epsilon{5} + \frac{1}{2}\epsilon{6} - \frac{1}{2}\epsilon{7} + \frac{1}{2}\epsilon_{8}$}; \node (node12) at (233.5bp,745.0bp) [draw,draw=none] {$\frac{1}{2}\epsilon{1} - \frac{1}{2}\epsilon{2} + \frac{1}{2}\epsilon{3} + \frac{1}{2}\epsilon{4} + \frac{1}{2}\epsilon{5} + \frac{1}{2}\epsilon{6} - \frac{1}{2}\epsilon{7} + \frac{1}{2}\epsilon_{8}$}; \node (node11) at (256.5bp,367.0bp) [draw,draw=none] {$\frac{1}{2}\epsilon{1} - \frac{1}{2}\epsilon{2} + \frac{1}{2}\epsilon{3} - \frac{1}{2}\epsilon{4} - \frac{1}{2}\epsilon{5} + \frac{1}{2}\epsilon{6} - \frac{1}{2}\epsilon{7} + \frac{1}{2}\epsilon_{8}$}; \node (node10) at (184.5bp,421.0bp) [draw,draw=none] {$\frac{1}{2}\epsilon{1} - \frac{1}{2}\epsilon{2} - \frac{1}{2}\epsilon{3} + \frac{1}{2}\epsilon{4} - \frac{1}{2}\epsilon{5} + \frac{1}{2}\epsilon{6} - \frac{1}{2}\epsilon{7} + \frac{1}{2}\epsilon_{8}$}; \draw [black,->] (node_6) ..controls (351.08bp,490.95bp) and (351.46bp,500.97bp) .. (node_4); \draw [black,->] (node_15) ..controls (314.74bp,654.5bp) and (283.84bp,668.0bp) .. (node_14); \draw [black,->] (node_25) ..controls (58.839bp,435.97bp) and (77.748bp,449.62bp) .. (node_9); \draw [black,->] (node_7) ..controls (400.32bp,438.02bp) and (383.5bp,450.16bp) .. (node_6); \draw [black,->] (node_10) ..controls (161.91bp,438.09bp) and (144.63bp,450.4bp) .. (node_9); \draw [black,->] (node_11) ..controls (234.32bp,384.02bp) and (217.5bp,396.16bp) .. (node_10); \draw [black,->] (node_22) ..controls (140.5bp,70.707bp) and (140.5bp,80.976bp) .. (node_20); \draw [black,->] (node_10) ..controls (238.22bp,438.83bp) and (283.65bp,453.06bp) .. (node_6); \draw [black,->] (node_19) ..controls (151.91bp,274.49bp) and (194.86bp,289.89bp) .. (node_13); \draw [black,->] (node_11) ..controls (310.22bp,384.83bp) and (355.65bp,399.06bp) .. (node_7); \draw [black,->] (node_18) ..controls (148.67bp,171.07bp) and (155.59bp,182.14bp) .. (node_0); \draw [black,->] (node_3) ..controls (114.5bp,598.95bp) and (114.5bp,608.97bp) .. (node_2); \draw [black,->] (node_9) ..controls (111.5bp,490.95bp) and (111.5bp,500.97bp) .. (node_5); \draw [black,->] (node_5) ..controls (112.36bp,544.95bp) and (112.94bp,554.97bp) .. (node_3); \draw [black,->] (node_21) ..controls (151.91bp,328.49bp) and (194.86bp,343.89bp) .. (node_11); \draw [black,->] (node_21) ..controls (111.5bp,327.63bp) and (111.5bp,339.75bp) .. (node_23); \draw [black,->] (node_19) ..controls (111.5bp,273.63bp) and (111.5bp,285.75bp) .. (node_21); \draw [black,->] (node_17) ..controls (111.5bp,220.95bp) and (111.5bp,232.26bp) .. (node_19); \draw [black,->] (node_18) ..controls (132.6bp,171.07bp) and (125.91bp,182.14bp) .. (node_17); \draw [black,->] (node_24) ..controls (140.5bp,20.707bp) and (140.5bp,30.976bp) .. (node_22); \draw [black,->] (node_23) ..controls (91.483bp,382.46bp) and (70.843bp,397.36bp) .. (node_25); \draw [black,->] (node_23) ..controls (131.11bp,381.97bp) and (150.28bp,395.62bp) .. (node_10); \draw [black,->] (node_13) ..controls (256.5bp,328.95bp) and (256.5bp,338.97bp) .. (node_11); \draw [black,->] (node_16) ..controls (352.5bp,598.95bp) and (352.5bp,608.97bp) .. (node_15); \draw [black,->] (node_1) ..controls (258.64bp,274.95bp) and (258.06bp,284.97bp) .. (node_13); \draw [black,->] (node_0) ..controls (154.15bp,221.85bp) and (138.27bp,235.32bp) .. (node_19); \draw [black,->] (node_12) ..controls (233.5bp,760.95bp) and (233.5bp,770.97bp) .. (node_8); \draw [black,->] (node_8) ..controls (233.5bp,815.12bp) and (233.5bp,825.1bp) .. (node_26); \draw [black,->] (node_3) ..controls (192.75bp,601.1bp) and (260.63bp,615.93bp) .. (node_15); \draw [black,->] (node_0) ..controls (194.89bp,221.7bp) and (218.18bp,234.79bp) .. (node_1); \draw [black,->] (node_4) ..controls (274.25bp,547.1bp) and (206.37bp,561.93bp) .. (node_3); \draw [black,->] (node_2) ..controls (152.26bp,654.5bp) and (183.16bp,668.0bp) .. (node_14); \draw [black,->] (node_6) ..controls (271.93bp,493.1bp) and (203.76bp,507.93bp) .. (node_5); \draw [black,->] (node_4) ..controls (352.5bp,544.95bp) and (352.5bp,554.97bp) .. (node_16); \draw [black,->] (node_20) ..controls (140.5bp,120.71bp) and (140.5bp,130.98bp) .. (node_18); \draw [black,->] (node_14) ..controls (233.5bp,706.95bp) and (233.5bp,716.97bp) .. (node_12); % \end{tikzpicture}

gives the error.

IOError: [Errno 2] No such file or directory: '/projects//.sage/temp/compute2-us/11056/dir_rhlr3d/tmpZqIlQF.png'

TikZ can have quite intense demands on computing power. Maybe there is insufficient quota on CPU time? Or perhaps some timeout for view & friends that's too short for LaTeX process to finish rendering?

[haraldschilly]

Another one:

Dom6 = posets.IntegerPartitionsDominanceOrder(6) 
show(Dom6)

It gives an error:IOError: [Errno 2] No such file or directory: '/projects/650e9ad1-6815-46e6-84a4-8f4b84e93685/.sage/temp/compute3-us/28553/dir_01nF1O/tmpplz2Ce.png'

while this works:

Comp5 = posets.IntegerCompositions(5) 
show(Comp5)

[williamstein]

Still completely broken after the switch to KuCalc, new images, etc.

[williamstein]

Tagging this as wontfix, because it will be fixed indirectly by creating a sage worksheet style mode (and kernel) for Jupyter notebooks. That will be https://github.com/sagemathinc/cocalc/issues/6374.

[williamstein]

Also, this sort of works actually, as of today in my cocalc-docker install:

but is broken on cocalc.com:

With Jupyter it explicitly says in a message to use the plot method:

And the plot looks completely different than what I got above.

I'm just going to close this.