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I'm trying to export an image at 1000 dpi. The author guide of a lot of papers wants this resolution! Then I must to import this image in Word in a small box; let's say 7x4 cm. This is the code that I made and the relative image:

grayColorList = (Blend[{Black, White}, #] & /@ Range[0, 1, 0.1]);
histogram = 
Labeled[Histogram[{dataBr[[All, 1]], datacl[[All, 1]], 
dataFCl[[All, 1]], dataF[[All, 1]]}, ChartLayout -> "Stacked", 
ChartLegends -> {"Br-derivatives", "Cl-derivatives", 
 "F+Cl+Br-derivatives", "F-derivatives"}, 
ChartStyle -> {grayColorList[[1]], grayColorList[[4]], 
 grayColorList[[7]], grayColorList[[9]]}], {Rotate[
Style["Relative Frequency", 12], 90 Degree], 
"\!\(\*SubscriptBox[\(\[Lambda]\), \(Exp\)]\)"}, {Left, Bottom}, 
FrameMargins -> {{-8, 0}, {0, 0}}] 


This is a very nice image, but when I try to Export it

Export["Histogram.Tif", histogram, ImageResolution -> 1000]

This is the result: enter image description here

And this is very ugly image! I've read the other similar posts but I can't find the answer. Thanks in advance.

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You need to set a specific ImageSize for your graphics. –  rm -rf Feb 18 '14 at 22:05
If i understand this all correctly, you essentially need an image that is 2756x1575 pixels in size. –  chuy Feb 18 '14 at 23:05

1 Answer 1

This problem is essentially because the new-in-9 legending functionality does not produce Graphics objects. It produces something similar to Row (i.e. with an underlying RowBox) that joins the Graphics and the legend. This is a generic object that can be displayed in a notebook but cannot be manipulated as conveniently as Graphics objects.

This tends to break my workflow too and I can't do a number of things I could easily do with Graphics (e.g. export to a specific size) ... I wish legended graphics were still proper Graphics.

Fortunately, as rm-rf said, in this case the solution is easy: just use the ImageSize option in Histogram with a numeric argument (i.e. not Automatic). For example, use ImageSize -> 360 which is the same as the default. Now exporting at higher resolution won't change the relative size of the graphics and the legend.

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Thanks a lot! very useful comment... –  Mary Feb 19 '14 at 16:21

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