Size of plot legend graphics

After trying to resize the plot legend of a waveform graph with the mouse, the small graphics showing the color and other plot properties suddenly got much longer, and the plot text was no longer left aligned. Tried to modify the legend programatically with a property node, setting ActPlot, LegWidth etc, but it doesn`t work the way I expected. The attached picture show an example of the problem. I want to resize the legend so it get a width the same as the outer bounds of the graph, the text should be left aligned, and the graphics stay small and right aligned. I`m using LV 2009.
Spoiler (Highlight to read)
Attachments:
graph-legend.JPG ‏66 KB

Gunnar,
You can basically get the sizes and alignations correct by customizing the Plot Legend. Select first the waveform graph itself -> Edit: Customize Control. After that select the first row (See Picture) from the Plot Legend and do the same -> Edit: Customize Control. Now you can type in the long plot name and move the graphics part to the right. Press "Apply changes" often to check if the Legend and its elements are in right place. Finally replace the original control with the customized control.
I hope this helps. A bit tricky to explain, but by playing with the customizing tool I'm sure you will get the idea soon.
Cheers,
Cerati
P.S. I noticed that it is in fact easier to write the plot names first directly to the legend and then use the customizing tool for the plot row to move the graphics to the right.
Attachments:
Customize plot legend.jpg ‏73 KB

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How can I limit the vertical size of the plot legend?

Hi all,
in my program I use a waveform graph and its plot legend.
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You can write to the "Active Plot" property node. The example given in the thread I linked to before shows using this. Did you take a look at that example?
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Attachments:
plot.vi ‏21 KB

Plot Legends on CWGraph

I have a graph I am doing with 4 plots in different colors. I would
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"Lee Robinson" wrote:
>I have a graph I am doing with 4 plots in different colors. I would>like
to put a legend on the graph indicating which axis is associated>with which
plot. It would also be nice of the legend printed when I>printed the graph.
I can'
t find any properties or methods in CWGraph>or its objects that will
let me put a legend on the graph.>>I thought of creating an image for the
plot area but it seemed an>awful lot like a kludge to do that.>>Anyone know
how to create legends for CWGraph?>>Lee Robinson>Agility, Inc.>

Mathematica crashes when trying to plot 3D graphics.

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X Error of failed request: GLXBadContext
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Minor opcode of failed request: 6 (X_GLXIsDirect)
Serial number of failed request: 111091
Current serial number in output stream: 111090
X Error of failed request: BadAlloc (insufficient resources for operation)
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Serial number of failed request: 111086
Current serial number in output stream: 111091
X Error of failed request: GLXBadContext
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Mathematica has received the signal: SIGSEGV and has exited.
If possible, please report this problem to [email protected]
describing in as much detail as possible what you were doing
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name of display: :0.0
display: :0 screen: 0
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.4
server glx extensions:
GLX_ARB_create_context, GLX_ARB_create_context_profile,
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client glx vendor string: Mesa Project and SGI
client glx version string: 1.4
client glx extensions:
GLX_ARB_create_context, GLX_ARB_create_context_profile,
GLX_ARB_create_context_robustness, GLX_ARB_get_proc_address,
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GLX_SGI_swap_control, GLX_SGI_video_sync, GLX_SGIS_multisample,
GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group,
GLX_EXT_texture_from_pixmap, GLX_INTEL_swap_event
GLX version: 1.4
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GLX_ARB_create_context, GLX_ARB_create_context_profile,
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GLX_EXT_visual_info, GLX_EXT_visual_rating,
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GLX_EXT_texture_from_pixmap, GLX_INTEL_swap_event
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OpenGL renderer string: Mesa DRI Mobile Intel® GM45 Express Chipset
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GL_EXT_blend_minmax, GL_EXT_blend_subtract, GL_EXT_copy_texture,
GL_EXT_polygon_offset, GL_EXT_subtexture, GL_EXT_texture_object,
GL_EXT_vertex_array, GL_EXT_compiled_vertex_array, GL_EXT_texture,
GL_EXT_texture3D, GL_IBM_rasterpos_clip, GL_ARB_point_parameters,
GL_EXT_draw_range_elements, GL_EXT_packed_pixels, GL_EXT_point_parameters,
GL_EXT_rescale_normal, GL_EXT_separate_specular_color,
GL_EXT_texture_edge_clamp, GL_SGIS_generate_mipmap,
GL_SGIS_texture_border_clamp, GL_SGIS_texture_edge_clamp,
GL_SGIS_texture_lod, GL_ARB_framebuffer_sRGB, GL_ARB_multitexture,
GL_EXT_framebuffer_sRGB, GL_IBM_multimode_draw_arrays,
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GL_INGR_blend_func_separate, GL_NV_blend_square, GL_NV_light_max_exponent,
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GL_ARB_framebuffer_object, GL_EXT_framebuffer_blit,
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GL_EXT_gpu_program_parameters, GL_EXT_texture_array,
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GL_ARB_vertex_array_bgra, GL_EXT_separate_shader_objects,
GL_EXT_texture_swizzle, GL_EXT_vertex_array_bgra,
GL_NV_conditional_render, GL_ARB_ES2_compatibility, GL_ARB_debug_output,
GL_ARB_draw_elements_base_vertex, GL_ARB_explicit_attrib_location,
GL_ARB_fragment_coord_conventions, GL_ARB_provoking_vertex,
GL_ARB_sampler_objects, GL_ARB_seamless_cube_map,
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32 GLX Visuals
visual x bf lv rg d st colorbuffer sr ax dp st accumbuffer ms cav
id dep cl sp sz l ci b ro r g b a F gb bf th cl r g b a ns b eat
0x020 24 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x021 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x07e 24 tc 0 24 0 r . . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None
0x07f 24 tc 0 24 0 r y . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None
0x080 24 tc 0 24 0 r y . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None
0x081 24 tc 0 24 0 r . . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x082 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x083 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x084 24 tc 0 32 0 r . . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None
0x085 24 tc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None
0x086 24 tc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None
0x087 24 tc 0 32 0 r . . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x088 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x089 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 8 16 16 16 0 0 0 Slow
0x08a 24 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x08b 24 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 16 16 16 16 0 0 Slow
0x08c 24 dc 0 24 0 r . . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None
0x08d 24 dc 0 24 0 r y . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None
0x08e 24 dc 0 24 0 r y . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None
0x08f 24 dc 0 24 0 r . . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x090 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x091 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x092 24 dc 0 32 0 r . . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None
0x093 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None
0x094 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None
0x095 24 dc 0 32 0 r . . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x096 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x097 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x098 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 16 16 16 0 0 0 Slow
0x099 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x09a 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 16 16 16 16 0 0 Slow
0x04d 32 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
48 GLXFBConfigs:
visual x bf lv rg d st colorbuffer sr ax dp st accumbuffer ms cav
id dep cl sp sz l ci b ro r g b a F gb bf th cl r g b a ns b eat
0x04e 0 tc 0 16 0 r . . 5 6 5 0 . . 0 0 0 0 0 0 0 0 0 None
0x04f 0 tc 0 16 0 r y . 5 6 5 0 . . 0 0 0 0 0 0 0 0 0 None
0x050 0 tc 0 16 0 r y . 5 6 5 0 . . 0 0 0 0 0 0 0 0 0 None
0x051 0 tc 0 16 0 r . . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None
0x052 0 tc 0 16 0 r y . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None
0x053 0 tc 0 16 0 r y . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None
0x054 24 tc 0 24 0 r . . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None
0x055 24 tc 0 24 0 r y . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None
0x056 24 tc 0 24 0 r y . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None
0x057 24 tc 0 24 0 r . . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x058 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x059 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x05a 24 tc 0 32 0 r . . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None
0x05b 24 tc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None
0x05c 24 tc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None
0x05d 24 tc 0 32 0 r . . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x05e 24 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x05f 32 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x060 0 tc 0 16 0 r y . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None
0x061 0 tc 0 16 0 r y . 5 6 5 0 . . 0 16 0 16 16 16 0 0 0 Slow
0x062 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x063 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 8 16 16 16 0 0 0 Slow
0x064 24 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x065 24 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 16 16 16 16 0 0 Slow
0x066 0 dc 0 16 0 r . . 5 6 5 0 . . 0 0 0 0 0 0 0 0 0 None
0x067 0 dc 0 16 0 r y . 5 6 5 0 . . 0 0 0 0 0 0 0 0 0 None
0x068 0 dc 0 16 0 r y . 5 6 5 0 . . 0 0 0 0 0 0 0 0 0 None
0x069 0 dc 0 16 0 r . . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None
0x06a 0 dc 0 16 0 r y . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None
0x06b 0 dc 0 16 0 r y . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None
0x06c 24 dc 0 24 0 r . . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None
0x06d 24 dc 0 24 0 r y . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None
0x06e 24 dc 0 24 0 r y . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None
0x06f 24 dc 0 24 0 r . . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x070 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x071 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x072 24 dc 0 32 0 r . . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None
0x073 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None
0x074 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None
0x075 24 dc 0 32 0 r . . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x076 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x077 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x078 0 dc 0 16 0 r y . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None
0x079 0 dc 0 16 0 r y . 5 6 5 0 . . 0 16 0 16 16 16 0 0 0 Slow
0x07a 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x07b 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 16 16 16 0 0 0 Slow
0x07c 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x07d 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 16 16 16 16 0 0 Slow
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Option "AccelMethod" "uxa"
or
Option "AccelMethod" "sna"
or
Option "NoAccel" "true"
without success.
Here are informations about the graphics card:
$ lspci -v -s `lspci | awk '/VGA/{print $1}'`
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07) (prog-if 00 [VGA controller])
Subsystem: Acer Incorporated [ALI] Device 0207
Flags: bus master, fast devsel, latency 0, IRQ 44
Memory at f4000000 (64-bit, non-prefetchable) [size=4M]
Memory at d0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 1800 [size=8]
Expansion ROM at <unassigned> [disabled]
Capabilities: <access denied>
Kernel driver in use: i915
while my /etc/X11/xorg.conf file looks like
Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection
Section "Files"
ModulePath "/usr/lib/xorg/modules"
FontPath "/usr/share/fonts/misc"
FontPath "/usr/share/fonts/100dpi:unscaled"
FontPath "/usr/share/fonts/75dpi:unscaled"
FontPath "/usr/share/fonts/TTF"
FontPath "/usr/share/fonts/Type1"
EndSection
Section "ServerFlags"
Option "DontZap" "False"
#ho aggiunto quanto segue il 22.06.2010 dopo che non riuscivo a cambiare la tastiera DISATTIVA L HOTPLUGIN
#Option "AutoAddDevices" "False"
EndSection
Section "Module"
Load "glx"
Load "dri"
Load "record"
Load "dbe"
Load "extmod"
Load "dri2"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/input/mice"
Option "ZAxisMapping" "4 5 6 7"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection
Section "Device"
### Available Driver options are:-
### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
### <string>: "String", <freq>: "<f> Hz/kHz/MHz"
### [arg]: arg optional
#Option "NoAccel" "true" # [<bool>]
#Option "SWcursor" # [<bool>]
#Option "ColorKey" # <i>
#Option "CacheLines" # <i>
#Option "Dac6Bit" # [<bool>]
#Option "DRI" # [<bool>]
#Option "NoDDC" # [<bool>]
#Option "ShowCache" # [<bool>]
#Option "XvMCSurfaces" # <i>
#Option "PageFlip" # [<bool>]
#Option "AccelMethod" "uxa"
#Option "AccelMethod" "sna"
Identifier "Card0"
Driver "intel"
VendorName "Intel Corporation"
BoardName "Mobile 4 Series Chipset Integrated Graphics Controller"
BusID "PCI:0:2:0"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
SubSection "Display"
Viewport 0 0
Depth 1
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 4
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection
I'm running a full updated Arch x86_64 release.
Any suggestions?
Thanks in advance,
Roberto

Hello BajaBoy,
I think it would be easiest to figure this out if I had the data to look at. If you can send this too me (I will treat this confidientially and it will be deleted after we got it to plot) please sned to me me directly at National Instruments.
My email address is my: first name DOT last name AT ni DOT com (no middle initial!).
We'll get back to you with an answer the same day unless we run into the Thanksgiving holiday before we get this.
Hope that helps,
Otmar D. Foehner
Business Development Manager
DIAdem and Test Data Management
National Instruments
Austin, TX - USA
"For an optimist the glass is half full, for a pessimist it's half empty, and for an engineer is twice bigger than necessary."

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Classic plot legend transparent background

So I want to do some custom annotations to a graph using a picture control behind a graph. Since I like the classic graph’s look, I’m using the classic graph (but this is not necessarily necessary –is that correct English?).
So my problem is this: When I make the graph BG transparent (to show the picture control with the custom graphics on it), the plot legend also shows the transparent BG in the little preview graph next to the plot name. Unfortunately, NI has placed the Visible Boolean behind this preview such that when you make the BG transparent, you see an old-school Boolean switch behind the damn plot example! This looks totally unacceptable. Is there any way to keep the BG from changing in the plot legend or any other way to fix this?
Thanks!
-Richard
"Computers are useless. They can only give you answers." - Pablo Picasso
Solved!
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Here's an example of what I'm talking about. Notice how the plot legend exposes the Visible Boolean when you make the BG transparent. Try to imagine that the picture control actually has something useful in it...
I suppose it might be possible to take a screenshot of the graph and then bring the picture control to the front with some sort of superposition of the screen shot and the image, but this seems like too much work and possibly prone to errors.
"Computers are useless. They can only give you answers." - Pablo Picasso
Attachments:
Plot BG.vi ‏20 KB

Plot legend overlapping text

I have an xygraph (from silver controls palette) (LabVIEW 2012 (SP1 12.0.1f5). I have encountered a problem where the plot legend text overlaps with plot graphic icon image. I don't know the cause of it but it always starts at my boss's end and the only solution that I have is to replace the xygraph with a new one (by right clicking the graph and selecting replace and then a new xygraph from the silver controls paltete. Is there a solution to this problem (autosize legend is turned on).
This is how it should be (and this is how it starts)
But this is how it ends up (after inderterminate time)
Any fixes?
Thanks in advance

Right-click on the graph and go to Advanced->Customize. You will now have the control editor open. Click on the wrench in the toolbar. It should now look like tweezers. You can now move individual peices around. This is how you can switch the legend text and icon.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
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Aligning Boolean Control to Plot Legend

Any ideas on how best to align an array of tick boxes against a plot legend?
I have a 1D array of Boolean controls and I want to use them to enable/disable the plots on a XY graph but I'm having problems getting the controls to line up with the legend text.
I've tried using element gaps in the array but there seems to be little control of the gap that is used. I've also tried creating a custom control and modifying the control height but I still can't get an exact alignment of the control to the legend text. I've also tried using different fonts for the legend text but it doesn't help.
I don't really want to use individual controls and would prefer to continue using an array if possible but I can't help thinking I'm missing something obvious!?
I've attached and example of the problem and would welcome any suggestions....

Sorry, apparently the resize operation does not survive a save operation. Weird! It looks just fine until closed and reopened.
Here's an approach that actually works: Just use a plain boolean button and import the appropriate checkbox graphics into the true and false cases, again using the control editor.
See if this suits your needs!
LabVIEW Champion . Do more with less code and in less time .
Attachments:
LegendExampleMOD2.vi ‏29 KB

How to remove entries from the plot legend?

Hello,
I have got a waveform graph to display measurement data. Sometimes there will be 40 plots shown. The plot legend also expands to 40 and I limit the number of elements shown in the Plot legend and I have activated the vertical scroll bar. Of course 40 plots are too many to work with. So the user has the ability to select plots to be shown. Now I want to decrease the number of elements in the plot legend as well. But if there were once 40 elements the plot legend remains in this size and the vertical scroll bar indicates that there are more elements than shown even if there are only e. g. two plots in the graph.
I don't want to increase and decrease the number of plots shown in the plot legend programmatically each time the user changes the number of plots shown. Secondly the plot legend shall have a maximum number of 20 elements (otherwise it would exceed my front panel). So I don't want to programmatically check whether to show the vertical scroll bar or not.
The legend should look like a partially filled array with grayed out elements.
How do I do this?
Is there a simple way to clear the plot legend and remove all entries?
Regards, Jörn

Hi Suse,
your example does not exactly solve my problem. I wanted the plot legend always to show 10 legend entries.
But it helped me to find the solution: set LegNumRows to 10 and set LegPlotMin to the number of plots in the Graph (see attached example).
One thing is still missing: setting the plot number currently at the top of the legend. If you run the attached example with 30 plots shown, scroll the legend down and run the VI once again with 3 plots shown then you will see no plots in the legend despite the fact that all could be shown. You need to move the scroll bar first to see the 3 elements.
Best regards, Jörn
Attachments:
Graph_Plotanzeige.vi ‏12 KB

Waveform graph plot legend in labview 8.5 won't respond to arrow keys?

I heard labview 8.5 fixes most of the problems that plague 8.2, so I recently installed it to try it out and see if it is worth the effort of another upgrade. Messing around today, I found an issue that wasn't related to the installer itself.
The plot legend on a waveform graph doesn't appear to respond to arrow keys for precise placement. It doesn't matter whether auto-size plot legend is turned on or off. When I want to place a plot legend very precisely, just like with any other labview control I like to use the arrow keys to get things perfectly aligned. I want to make the plot legend perfectly in the corner of the graph but its very hard to get it placed right with just the mouse.  In labview 8.5 it seems like plot legends no longer respond to arrow keys.
Can anyone confirm this or know of a way to precisely place the plot legend in labview 8.5?
-Devin
I got 99 problems but 8.6 ain't one.

Ben,
I checked the snap to grid hypothesis. Even when activated the arrow keys still allow an accurate positionning of the objects at pixel level.
That's so nice that I changed my setup. I now have a reasonnably large spaced grid (50 pixels) with an invisible grid (contrast adjusted to zero). That should make object positionning and dimensionning much faster than before.
Chilly Charly    (aka CC)
         E-List Master - Kudos glutton - Press the yellow button on the left...

Capture mouse event(s) on XYgraph plot legend

I notice that when I move the mouse over the plot name portion of the plot legend, the mouse icon changes. If I left-click in this portion, the entire plot name region is highlighted. What event(s) and/or properties do I use to capture this behavior. I would like to know the size and/or location of the plot name region highlighted. I'm using LV 2010. I know about the Legend.Size and Legend.Position properties.

Faustina:
Unfortunately, there isn't an event we can latch onto when the plot within the legend is clicked on. As a workaround, we can add a radio button control beside the legend to select various plots. The radio button indices match up to the plot indices, so we can still select the active plot and rename it.
I've attached a small example that allows the user to select a plot, and rename it from a menu of presets. You'll probably want to adapt it to run in a state machine or event structure, but the logic for changing plot names is there.
Caleb Harris
National Instruments | Mechanical Engineer | http://www.ni.com/support
Attachments:
change plot names.vi ‏19 KB

How to Generate Event on change in Plot Legend for XY Graph

Hi,
I have two XY graphs on the front panel and would like to maintain a common plot legend such that any change in the plot legend affects both graphs.
Objective: I would like any value change in plot legend to fire an event.
How do I program that?
I know of value change event for the graph but am unable to find something specific to the plot legend. Other option is to have the user press a "refresh" button that will fire the event.
Feel free to share thoughts on other elegant methods to achieve the same objective.
Thanks,
Gurdas
Gurdas Singh
PhD. Candidate | Civil Engineering | NCSU.edu

Hi Sarah,
Looks like you are talking of exactly what I want!
I have attached a sample VI to try achieve what I want. But it still has some issues which are:
1) I am unable to configure a Plot Attribute Change Event. I have used a mouse leave event instead. How does one configure a Plot Attribute Change Event?
2) Is there no single property which will transfer all the settings of plot legend from one graph to plot legend of another graph? In my sample VI, I have to read each property of the master graph and feed it into the slave graph.
Kindly note I am using LV FDS 7.1 on Win2000
Thanks,
Gurdas
Message Edited by Gurdas on 03-27-2006 11:51 PM
Gurdas Singh
PhD. Candidate | Civil Engineering | NCSU.edu
Attachments:
Graph_PlotLegend_Event.vi ‏45 KB

Programmatically formatting the active plot and plot legend

I am monitoring 6 production sequences on an XY graph. A ring control selects which sequence I show on the graph. For each sequence I have tag data showing the "actuals" and tag data showing the "averages" and a boolean toggle switch controls which of these plots I show on the graph. I am having trouble controlling the formatting of the plots (both actuals and averages are currently shown in white) and the plot legend is wrong. I have tried programming my vi to format my plots using a property node from the XY graph and writing to the correct plot inputs, however it doesn’t seem to be working. I would also like the plot legend to show ONLY the active plot on the XY graph.
I would like a red continuous line for the averages and blue square scatter points for my actuals. I can’t seem to get this at all. I have attached my vi if anyone can help?
Many thanks for taking the time to help,
Best regards,
Stuart
Attachments:
Historical Handling Time Trends.vi ‏137 KB

Hi Stuart
Maybe this helps you.
Thomas
Using LV8.0
Don't be afraid to rate a good answer...
Attachments:
Plots.vi ‏65 KB

Start position on plot legend scrollbar

If I right click on the plot legend I can show the index display and vertical scrollbar. When I move the scrollbar the index changes accordingly. Does anyone know how to programmatically find the value of this index so that I know which plot labels the user sees. I've tried looking at the property node but I can't see anything that gives me what I need.

Thanks for your reply Rob.
I was thinking that was the case. Sometimes it’s possible that there are clever little tricks hidden away in the set up screens. I’ve ended up now with my old method which looks very clumsy (see attached vi), I can make it look much better when I get the scroll bar position.
I’ll follow up on the product suggestion though as it would be a very useful feature.
Attachments:
Scrollbar Demo.vi ‏52 KB

How do I programmatically change the plot legend names on my xy graph?

I have a need to change the names/labels on my XY Graph's Legend at run time. This is because plot 0 is not always the same set of data. I have searched high and low for a couple days now to no avail. The closest thing I've seen is overlaying a string over the plot legend, but I would prefer to do change the property of this box. Any help would be appreciated.

Hello Ben,
with waveforms this also works for me fine. So where is the pitfall? (if always all works fine, one don't really gets experience)
greets, Dave
P.S. @ J.B. I used the Code Capture Tool from the Starware Thread, this made me so fast. If I could do, I would give it five stars each time I use it.
Btw. would it be possible to programmatically give ratings with LV? Here it should be used. Thanks again to tst & the others
Message Edited by daveTW on 06-14-2007 09:13 AM
Greets, Dave
Attachments:
Example_FP.png ‏5 KB

Size of plot legend graphics

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