How to save a vector to a file?

[ted]

I get the following error when trying to save a vector to a file.

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first instance of A
first instance of k1
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libpvm [pid3009] /tmp/pvmd.501: No such file or directory
libpvm [pid3009] /tmp/pvmd.501: No such file or directory
libpvm [pid3009] /tmp/pvmd.501: No such file or directory
libpvm [pid3009]: pvm_parent(): Can't contact local daemon
/usr/local/nrn/i686/bin/nrniv: label : object prefix is NULL near line 3
{load_file("stdlib.hoc","clipboard_save") clipboard_save()}
                                                            ^
        clipboard_save()

[ted]

This stuff

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libpvm [pid3009] /tmp/pvmd.501: No such file or directory
libpvm [pid3009] /tmp/pvmd.501: No such file or directory
libpvm [pid3009] /tmp/pvmd.501: No such file or directory
libpvm [pid3009]: pvm_parent(): Can't contact local daemon

is irrelevant unless you are using PVM to implement a workstation cluster.

This message

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/usr/local/nrn/i686/bin/nrniv: label : object prefix is NULL near line 3
{load_file("stdlib.hoc","clipboard_save") clipboard_save()}
                                                            ^
        clipboard_save()

tells me you were trying to use the GUI to save NEURON's clipboard
to a file by doing
NEURON Main Menu / Vector / Save to File
but the clipboard was empty. Before doing this, you must first
fill the clipboard, e.g. by using a Graph's Pick Vector. Click on
the Graph's menu box and select the Pick Vector item. Then
click on a trace plotted in the Graph. Then you can use
NEURON Main Menu / Vector / Save to File

If you are going to do this many times, you will find it more
convenient to do it under program control, using the Vector
class's record() and printf() methods.